Bd math Olympiad 2015 regional questions

1. Bd math Olympiad 2015 regional questions

2. āϕ⧋āύ āĻāĻ•āϟāĻŋ āĻŦāĻ›āϰ⧇ 31 āĻĄāĻŋāϏ⧇āĻŽā§āĻŦāϰ āĻļ⧁āĻ•ā§āϰāĻŦāĻžāϰāĨ¤ āϐ āĻŦāĻ›āϰ⧇ 53 āϟāĻŋ āĻŦ⧃āĻšāĻ¸ā§āĻĒāϤāĻŋāĻŦāĻžāϰ āĻĨāĻžāĻ•āϞ⧇ āϐ āĻŦāĻ›āϰ⧇ āĻĻāĻŋāύāϏāĻ‚āĻ–ā§āϝāĻž āĻ•āϤ?
31st December of a year falls on a Friday. If there were 53 Thursdays in that year, what was the number of days in that year?
3. \frac{2}{5} āĻ­āĻ—ā§āύāĻžāĻ‚āĻļāϟāĻŋ \frac{5}{2} āĻāϰ āĻ•āϤ āĻļāϤāĻžāĻ‚āĻļ?
What percentage \frac{2}{5} of is \frac{5}{2} ?
4. āĻāĻ•āϟāĻŋ āĻ•ā§āϞāĻžāϏ⧇ 20 āϜāύ āϚāĻ•āϞ⧇āϟ āĻāĻŦāĻ‚ 15 āϜāύ āφāχāϏāĻ•ā§āϰāĻŋāĻŽ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇āĨ¤ āĻāĻĻ⧇āϰ āĻŽāĻ§ā§āϝ⧇ 10 āϜāύ āĻĻ⧁āχāϟāĻŋāχ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇āĨ¤ āĻ•ā§āϞāĻžāϏ⧇āϰ āĻļāĻŋāĻ•ā§āώāĻžāĻ°ā§āĻĨā§€āϏāĻ‚āĻ–ā§āϝāĻž 40 āϜāύ āĻšāϞ⧇ āĻ•āϝāĻŧāϜāύ āĻĻ⧁āχāϟāĻŋāϰ āĻāĻ•āϟāĻŋāĻ“ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇ āύāĻž?
In a class 20 students like chocolate and 15 students like icecream. Among them 10 students like both of chocolate and icecream. If the number of stuednts in the class is 40 then how many of them dont like none of icecream and chocolate?
5. āĻ—āύāĻŋ āϏāĻžāĻšā§‡āĻŦ⧇āϰ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻĒ⧁āĻ¤ā§āϰ⧇āϰ āϏāĻŽāĻžāύ āϏāĻ‚āĻ–ā§āϝāĻ• āĻ­āĻžāχ āĻ“ āĻŦā§‹āύ āφāϛ⧇, āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻ•āĻ¨ā§āϝāĻžāϰ āĻ­āĻžāχāϝāĻŧ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§‹āύ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻžāϰ 2 āϗ⧁āύāĨ¤ āϤāĻžāϰ āĻĒ⧁āĻ¤ā§āϰ āĻ“ āĻ•āĻ¨ā§āϝāĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āύāĻŋāĻ°ā§āĻŖāϝāĻŧ āĻ•āϰāĨ¤
Mr Goni’s each son has equal number of brother and sister. But each daughter has twice brothers as many as sisters. Find the number of his daughter and son.

6. a, b, c, d āϚāĻžāϰāϟāĻŋ āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻāĻŦāĻ‚ a < b < c <d āĨ¤ a + b + (c × d) āϏāĻ‚āĻ–ā§āϝāĻžāϟāĻŋ 4 āĻĻā§āĻŦāĻžāϰāĻž āĻŦāĻŋāĻ­āĻžāĻœā§āϝ āĻšāϞ⧇ a āĻāϰ āĻŽāĻžāύ āĻ•āϤ?
a, b, c, d are four prime number and a <b <c <d, if a+b+ (c × d) is divisible by 4, find out the value of a.
7. z āĻ“ y āĻāϰ āϞāϏāĻžāϗ⧁, x āĻ“ y āĻāϰ āϞāϏāĻžāϗ⧁āϰ 3 āϗ⧁āύāĨ¤ x āĻ“ y āĻāϰ āĻ—āϏāĻžāϗ⧁ 1 āĻāĻŦāĻ‚ y āĻ“ z āĻāϰ āĻ—āϏāĻžāϗ⧁ 1 āĻāĻŦāĻ‚ 1<x<y<z āĻšāϞ⧇ x+y+z āĻāϰ āϏāĻ°ā§āĻŦāύāĻŋāĻŽā§āύ āĻŽāĻžāύ āĻŦ⧇āϰ āĻ•āϰāĨ¤
LCM of y and z is 3 times the LCM of x and y. If GCD of x and y and GCD of y and z are both equal to 1 and 1<x<y<z, find the minimum value of x+y+z.

8. āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āĻĻ⧇āϰ āĻŽāĻ§ā§āϝ⧇ ā§Ģ āϜāύ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻž āĻāĻŦāĻ‚ ā§Ž āϜāύ āĻŦā§āϰāĻžāϜāĻŋāϞ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āϟāĻžāϰ āĨ¤ āϤāĻžāϰāĻž āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ āωāĻĒāϞāĻ•ā§āώ⧇ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āĻŸā§‡āϰ āĻĻāϞ⧇āϰ āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ a āĻ“ bāϟāĻŋ āĻ•āϰ⧇ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻŋāϝāĻŧ⧇āϛ⧇ āĨ¤ āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻĻ⧇āĻļāĻĒā§āϰ⧇āĻŽāĻŋāĻ• āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āϰāĻž āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĻ⧇āĻļ⧇āϰ āφāϰ⧋ n āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ⧇āϰ 32 āϟāĻŋ āĻŸā§€āĻŽā§‡āϰ āĻĒā§āϰāϤāĻŋ āϏāĻŽā§āĻŽāĻžāύ āĻĻ⧇āĻ–āĻŋāϝāĻŧ⧇ āϤāĻžāϰāĻž āĻŽā§‹āϟ 32 āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āϤāĻžāĻĻ⧇āϰ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§āϰāĻžāϜāĻŋāϞ āĻ“ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻžāϰ āĻĒāϤāĻžāĻ•āĻžāϰ āĻĨ⧇āϕ⧇ āĻŦ⧇āĻļāĻŋ āĻšāϞ⧇ āĻāĻŦāĻ‚ āϏāĻŦ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇ a × b × n āĻāϰ āϏāĻ°ā§āĻŦā§‹āĻšā§āϚ āĻŽāĻžāύ āĻ•āϤ?
There are a number of citizen who supports Argentina, and b number of citizen who support Brazil in Newton City. All of them raised the flag of their supported teams for world cup. The citizen of Newton City wants to raise n more flags. To honor the 32 teams participating in world cup, they want to raise 32 flags in total. If the number of their own flag is more than the number of flags of Brazil and Argentina, find maximum possible value of a×b×n. All the flag numbers are prime numbers.

9. āϞāĻž-āϞāĻŋāĻ—āĻžāϝāĻŧ āϕ⧋āύ āϏāĻĒā§āϤāĻžāĻšā§‡ āĻšāϝāĻŧ āϰ⧋āύāĻžāϞāĻĻā§‹ 1 āĻ—ā§‹āϞ āĻ“ āĻŽā§‡āϏāĻŋ 7 āĻ—ā§‹āϞ āĻ•āϰ⧇ āĻ…āĻĨāĻŦāĻž āϰ⧋āύāĻžāϞāĻĻā§‹ 4 āĻ—ā§‹āϞ āĻ“ āĻŽā§‡āϏāĻŋ 1 āĻ—ā§‹āϞ āĻ•āϰ⧇āĨ¤ āϞāĻŋāϗ⧇āϰ 14 āϏāĻĒā§āϤāĻžāĻš āϝāĻžāĻ“āϝāĻŧāĻžāϰ āĻĒāϰ āĻŽā§‡āϏāĻŋ āĻ“ āϰ⧋āύāĻžāϞāĻĻā§‹āϰ āĻ—ā§‹āϞ⧇āϰ āĻĒāĻžāĻ°ā§āĻĨāĻ•ā§āϝ 20 āĻāϰ āύāĻŋāĻšā§‡ āϕ⧀ āϕ⧀ āĻšāϤ⧇ āĻĒāĻžāϰ⧇?
In Spanish La Liga in any week either Messi scores 7 goals and Ronaldo scores 1 or Ronaldo scores 4 goals and Messi scores 1. After 14 weeks, what are the values of the difference between their numbers of goals below 20?
10. āϰāϜāϤ⧇āϰ āĻ•āĻžāϛ⧇ 7āϟāĻž āφāϞāĻžāĻĻāĻž āϧāϰāύ⧇āϰ āϜāĻžāĻ°ā§āϏāĻŋ āφāϛ⧇āĨ¤ āϏ⧌āϰāĻ­ 4āϟāĻž āĻāĻŦāĻ‚ āĻļāĻžāύ 3āϟāĻž āϜāĻžāĻ°ā§āϏāĻŋ āϚāĻžāχāϞāĨ¤ āĻāĻ–āύ āϰāϜāϤ āĻĻ⧇āĻ–āϞ āϏ⧇ 7āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ āϏ⧌āϰāϭ⧇āϰ āϜāĻ¨ā§āϝ 4āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 35āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āφāĻŦāĻžāϰ āĻļāĻžāύ⧇āϰ āϜāĻ¨ā§āϝ⧇āĻ“ 7āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ 3āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 35āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āĻŽāĻžāϰāϜāĻžāύ āϰāϜāϤāϕ⧇ 1āϟāĻŋ āύāϤ⧁āύ āϜāĻžāĻ°ā§āϏāĻŋ āĻĻāĻŋāϞāĨ¤ āĻāĻŦāĻžāϰ āϰāϜāϤ āϏ⧌āϰāϭ⧇āϰ 4āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āϜāĻ¨ā§āϝ āĻ•āϤ āĻ­āĻžāĻŦ⧇ āϜāĻžāĻ°ā§āϏāĻŋ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇?
Rajat has 7 different jerseys. Saurav wants 4 and Shaan wants 3 jerseys. Now Rajat can choose 4 jerseys from the 7 in 35 ways. He can also choose the 3 for Shaan in 35 Ways. Rajat gets another jersey from Marzaan. Now, in how many ways may he choose 4 jerseys for Saurav?

Junior Category

1. \frac{1}{2} āĻ­āĻ—ā§āύāĻžāĻ‚āĻļāϟāĻŋ \frac{5}{2} āĻāϰ āĻ•āϤ āĻļāϤāĻžāĻ‚āĻļ?
What percentage of \frac{5}{2} is \frac{1}{2} ?
2. āĻāĻ•āϟāĻŋ āĻ•ā§āϞāĻžāϏ⧇ 15 āϜāύ āϚāĻ•āϞ⧇āϟ āĻāĻŦāĻ‚ 15 āϜāύ āφāχāϏāĻ•ā§āϰāĻŋāĻŽ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇āĨ¤ āĻāĻĻ⧇āϰ āĻŽāĻ§ā§āϝ⧇ 10 āϜāύ āĻĻ⧁āχāϟāĻŋāχ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇āĨ¤ āĻ•ā§āϞāĻžāϏ⧇āϰ āĻļāĻŋāĻ•ā§āώāĻžāĻ°ā§āĻĨā§€āϏāĻ‚āĻ–ā§āϝāĻž 50 āϜāύ āĻšāϞ⧇ āĻ•āϝāĻŧāϜāύ āĻĻ⧁āχāϟāĻŋāϰ āĻāĻ•āϟāĻŋāĻ“ āĻĒāĻ›āĻ¨ā§āĻĻ āĻ•āϰ⧇ āύāĻž?
In a class 15 students like chocolate and 15 students like icecream. Among them 10 students like both of chocolate and icecream. If the number of stuednts in the class is 50 then how many of them dont like none of icecream and chocolate?
3. āĻāĻ•āϜāύ āĻŦā§āϝāĻžāϟāϏāĻŽā§āϝāĻžāύ āϝāϤāϟāĻŋ āĻŽā§āϝāĻžāϚ āϖ⧇āϞ⧇āϛ⧇ āĻĒā§āϰāϤāĻŋ āĻŽā§āϝāĻžāĻšā§‡ āĻ—āĻĄāĻŧ⧇ āϤāϤ āϰāĻžāύ āĻ•āϰ⧇āϛ⧇āĨ¤ āϤāĻžāϰ āĻŽā§‹āϟ āϰāĻžāύāϏāĻ‚āĻ–ā§āϝāĻžāϰ āĻĻāĻļāϕ⧇āϰ āϘāϰ⧇āϰ āĻ…āĻ‚āĻ•āϟāĻŋ 0āĨ¤ āĻŦā§āϝāĻžāϟāϏāĻŽā§āϝāĻžāύ āϝāĻĻāĻŋ 10 āϟāĻŋāϰ āĻŦ⧇āĻļāĻŋ āĻŽā§āϝāĻžāϚ āϖ⧇āϞ⧇ āĻĨāĻžāϕ⧇ āϤāĻŦ⧇ āϏ⧇ āĻ•āĻŽāĻĒāĻ•ā§āώ⧇ āĻ•āϝāĻŧāϟāĻŋ āĻŽā§āϝāĻžāϚ āϖ⧇āϞ⧇āϛ⧇?
The average run of a batsman is equal the number of matches he played. The 2nd digit of his total runs is 0. The batsman has not played more than 10 matches. At least how many match he played ?
4. āĻ—āύāĻŋ āϏāĻžāĻšā§‡āĻŦ⧇āϰ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻĒ⧁āĻ¤ā§āϰ⧇āϰ āϏāĻŽāĻžāύ āϏāĻ‚āĻ–ā§āϝāĻ• āĻ­āĻžāχ āĻ“ āĻŦā§‹āύ āφāϛ⧇, āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻ•āĻ¨ā§āϝāĻžāϰ āĻ­āĻžāχāϝāĻŧ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§‹āύ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻžāϰ 3 āϗ⧁āύāĨ¤ āϤāĻžāϰ āĻĒ⧁āĻ¤ā§āϰ āĻ“ āĻ•āĻ¨ā§āϝāĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āύāĻŋāĻ°ā§āĻŖāϝāĻŧ āĻ•āϰāĨ¤
Mr Goni’s each son has equal number of brother and sister. But each daughter has thrice brothers as many as sisters. Find the number of his daughter and son.
5. z āĻ“ y āĻāϰ āϞāϏāĻžāϗ⧁, x āĻ“ y āĻāϰ āϞāϏāĻžāϗ⧁āϰ 3 āϗ⧁āύāĨ¤ x āĻ“ y āĻāϰ āĻ—āϏāĻžāϗ⧁ 1 āĻāĻŦāĻ‚ y āĻ“ z āĻāϰ āĻ—āϏāĻžāϗ⧁ 1 āĻāĻŦāĻ‚ 1<x<y<z āĻšāϞ⧇ x × y × z āĻāϰ āϏāĻ°ā§āĻŦāύāĻŋāĻŽā§āύ āĻŽāĻžāύ āĻŦ⧇āϰ āĻ•āϰāĨ¤
LCM of y and z is 3 times the LCM of x and y. If GCD of x and y and GCD of y and z are both equal to 1 and 1<x<y<z, find the minimum value of x×y×z.
6. āϤ⧁āώāĻžāϰ, āϏāĻžāĻĻāĻŋāϝāĻŧāĻž,āĻŽāĻžāĻšāĻĻāĻŋ,āφāϰ⧇āĻĢāĻŋāύ āĻŽā§āϝāĻžāĻĨ āĻ•ā§āϞāĻžāĻŦ⧇āϰ āĻ•ā§āϞāĻžāϏ āύ⧇āϝāĻŧāĨ¤ āϤ⧁āώāĻžāϰ āĻ•ā§āϞāĻžāϏ āύ⧇āϝāĻŧ āĻĒā§āϰāϤāĻŋ āϤ⧃āϤ⧀āϝāĻŧ āĻĻāĻŋāύ⧇, āϏāĻžāĻĻāĻŋāϝāĻŧāĻž āĻ•ā§āϞāĻžāϏ āύ⧇āϝāĻŧ āĻĒā§āϰāϤāĻŋ āϚāϤ⧁āĻ°ā§āĻĨ āĻĻāĻŋāύ⧇, āĻŽāĻžāĻšāĻĻāĻŋ āĻ•ā§āϞāĻžāϏ āύ⧇āϝāĻŧ āĻĒā§āϰāϤāĻŋ āώāĻˇā§āĻ  āĻĻāĻŋāύ⧇, āφāϰ āφāϰ⧇āĻĢāĻŋāύ āĻ•ā§āϞāĻžāϏ āύ⧇āϝāĻŧ āĻĒā§āϰāϤāĻŋ āϏāĻĒā§āϤāĻŽ āĻĻāĻŋāύ⧇āĨ¤ āφāϜ āĻ“āϰāĻž āϏāĻŦāĻžāχ āĻ•ā§āϞāĻžāϏ āύāĻŋāĻšā§āϛ⧇āĨ¤ āφāĻŦāĻžāϰ āĻ•āϤāĻĻāĻŋāύ āĻĒāϰ⧇ āĻ“āϰāĻž āĻāĻ•āϏāĻžāĻĨ⧇ āĻ•ā§āϞāĻžāϏ āύāĻŋāĻŦ⧇āĨ¤
Tusher, Sadia, Mahdi and Arefin take classes at Math Club. Tusher’s classes are on every third day, Sadia’s on every fourth day, Mahdi’s on every sixth day and Arefin’s are on every seventh day. Everyone has classes today. How many days later, will they all
have classes again?
7. āϰāϜāϤ⧇āϰ āĻ•āĻžāϛ⧇ āĻĻ⧁āϟāĻž āφāϞāĻžāĻĻāĻž āϧāϰāύ⧇āϰ āϜāĻžāĻ°ā§āϏāĻŋ āφāϛ⧇āĨ¤ āϏ⧌āϰāĻ­ 3āϟāĻž āĻāĻŦāĻ‚ āĻļāĻžāύ 2āϟāĻž āϜāĻžāĻ°ā§āϏāĻŋ āϚāĻžāχāϞāĨ¤ āĻāĻ–āύ āϰāϜāϤ āĻĻ⧇āĻ–āϞ āϏ⧇ 5āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ āϏ⧌āϰāϭ⧇āϰ āϜāĻ¨ā§āϝ 3āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 10āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āφāĻŦāĻžāϰ āĻļāĻžāύ⧇āϰ āϜāĻ¨ā§āϝ⧇āĻ“ āĻĻ⧁āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ 2āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 10āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āĻŽāĻžāϰāϜāĻžāύ āϰāϜāϤāϕ⧇ 1āϟāĻŋ āύāϤ⧁āύ āϜāĻžāĻ°ā§āϏāĻŋ āĻĻāĻŋāϞāĨ¤ āĻāĻŦāĻžāϰ āϰāϜāϤ āϏ⧌āϰāϭ⧇āϰ 3āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āϜāĻ¨ā§āϝ āĻ•āϤ āĻ­āĻžāĻŦ⧇ āϜāĻžāĻ°ā§āϏāĻŋ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇?

8. O āϕ⧇āĻ¨ā§āĻĻā§āϰāϝ⧁āĻ•ā§āϤ āĻŦ⧃āĻ¤ā§āϤ⧇ OA || BC, OC || AB āĨ¤ ∠OAB=?

%Focuse keyword%
O is the center of the circle and OA || BC, OC || AB. ∠OAB=?
9. āϤāĻŋāύ āĻ…āĻ™ā§āϕ⧇āϰ āĻāĻŽāύ āĻāĻ•āϟāĻŋ āϏāĻ‚āĻ–ā§āϝāĻž āύ⧇āĻ“āϝāĻŧāĻž āĻšāϞ āϝāĻžāϰ āĻļāϤāĻ• āĻ“ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāύ⧀āϝāĻŧ āĻ…āĻ™ā§āϕ⧇āϰ āϗ⧁āĻŖāĻĢāϞ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻĨ⧇āϕ⧇ 17 āĻŦ⧇āĻļā§€ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻ…āĻ™ā§āĻ• āϤāĻŋāύāϟāĻŋ āϝ⧋āĻ— āĻ•āϰāϞ⧇ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϝāĻŧāĨ¤ āĻāĻ–āύ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāĻžāύ⧀āϝāĻŧ āĻ…āĻ™ā§āĻ•āϟāĻŋ āĻāĻ•āϟāĻŋ āĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻ“ āĻāĻ•āϟāĻŋ āϘāύ āϏāĻ‚āĻ–ā§āϝāĻžāϰ āĻ—āĻĄāĻŧ⧇āϰ āϏāĻŽāĻžāύ āĻšāϞ⧇ āϏāĻ‚āĻ–ā§āϝāĻžāϟāĻŋāϰ āϏāĻ°ā§āĻŦā§‹āĻšā§āϚ āĻŽāĻžāύ āĻ•āϤ? There is a 3 digit number such that the product of the digits at tens place and hundreds place is 17 greater than a perfect square number and the sum of the 3 digits is a perfect square number. Again the digit at tens place is the average of a square number and a cubic number. What is the highest value of this 3 digit number?
10. ABCD āĻāĻ•āϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āĻšāĻŦ⧇ āϝāĻĻāĻŋ AB > CD āĻšāϝāĻŧāĨ¤ (1210 āĻāĻ•āϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇āĻ“ 1213 āύāĻžāĨ¤ āĻ•āϤāϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āφāϛ⧇?
ABCD is called a dumb-headed number if AB>CD. Like 1210 is a dumb-headed number, but 1213 is not. How many dumb-headed numbers are there?

 

Secondary Category

1. āĻāĻ•āϟāĻŋ āĻĻāϞ⧇āϰ 10 āϜāύ āϖ⧇āϞ⧋āϝāĻŧāĻžāĻĄāĻŧ⧇āϰ āĻŦāϝāĻŧāϏ⧇āϰ āĻ—āĻĄāĻŧ 10 āĻŦāĻ›āϰāĨ¤ āϤāĻžāĻĻ⧇āϰ āĻŦāϝāĻŧāϏ āϧāύāĻžāĻ¤ā§āĻŽāĻ• āĻĒā§‚āĻ°ā§āĻŖ āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇ āĻ“āχ 10 āϜāύ⧇āϰ āĻ•āĻžāϰ⧋ āĻŦāϝāĻŧāϏ āϏāĻŦāĻšā§‡āϝāĻŧ⧇ āĻŦ⧇āĻļāĻŋ āĻ•āϤ āĻšāϤ⧇ āĻĒāĻžāϰ⧇?
Average of the ages of ten players of a team is 10. If their ages are integer then what is the maximum age of any player of those ten players?
2. āĻ•āĻŋāϏāĻŽāĻŋāϏ āύāϤ⧁āύ 7 āĻāϰ āϘāϰ⧇āϰ āύāĻžāĻŽāϤāĻž āĻļāĻŋāϖ⧇āϛ⧇ āĨ¤ āϏ⧇ āĻāĻ•āĻĻāĻŋāύ āĻŦāύ⧇ āĻŦ⧇āĻĄāĻŧāĻžāϤ⧇ āϗ⧇āϞ āĻāĻŦāĻ‚ āĻ—āĻžāĻ› āϗ⧁āĻŖāϤ⧇ āĻĨāĻžāĻ•āϞ⧋ āĨ¤ āϏ⧇ āĻĒā§āϰāĻĨāĻŽ āĻ—āĻžāĻ› āĻĻ⧇āϖ⧇ āĻŦāϞāϞ⧋, āϏāĻžāϤ āĻāĻ•ā§- āϕ⧇ āϏāĻžāϤ, āĻāϰāĻĒāϰ āĻ—āĻžāϛ⧇ āϞāĻŋāĻ–āϞ⧋ 7, āĻāϰāĻĒāϰ āϏ⧇ āĻŦāϞāϞ⧋ āϏāĻžāϤ āĻĻ⧁āϗ⧁āϪ⧇ āϚ⧌āĻĻā§āĻĻ āĻāĻŦāĻ‚ āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āφāϰ⧇āĻ• āĻ—āĻžāϛ⧇ āϞāĻŋāĻ–āϞ 14 … āĻāĻ­āĻžāĻŦ⧇ āϝāĻĻāĻŋ āϏ⧇ āĻļ⧇āώ āϝ⧇ āĻ—āĻžāĻ› āϗ⧁āϪ⧇āϛ⧇ āϏ⧇āχ āĻ—āĻžāϛ⧇ āϞ⧇āϖ⧇ 1421 āϤāĻŦ⧇ āĻ—āĻžāϛ⧇ āϞ⧇āĻ–āĻž āϏāĻ‚āĻ–ā§āϝāĻžāϗ⧁āϞ⧋āϰ āĻ—,āϏāĻž,āϗ⧁ āĻ•āϤ āĻšāĻŦ⧇?
Kissmiss learned to multiply with 7 recently. One day, she went to a forest and started counting the trees. When she sees the first one tree, she says, “7 times 1 is 7”, and then writes 7 on the first tree. Then after seeing the second tree, she says, “7 times 2 is 14, and then writes 14 on the second tree. If she continues like this, and write 1421 on the last tree, can you find the gcd (greatest common divisor) of all the number she had written on the trees?
3. O āϕ⧇āĻ¨ā§āĻĻā§āϰāϝ⧁āĻ•ā§āϤ āĻŦ⧃āĻ¤ā§āϤ⧇ OA || BC, OC || AB āĨ¤ ∠OAB=?

%Focuse keyword%
O is the center of the circle and OA || BC, OC || AB. ∠OAB=?
4. āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āĻĻ⧇āϰ āĻŽāĻ§ā§āϝ⧇ ā§Ģ āϜāύ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻž āĻāĻŦāĻ‚ ā§Ž āϜāύ āĻŦā§āϰāĻžāϜāĻŋāϞ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āϟāĻžāϰ āĨ¤ āϤāĻžāϰāĻž āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ āωāĻĒāϞāĻ•ā§āώ⧇ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āĻŸā§‡āϰ āĻĻāϞ⧇āϰ āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ a āĻ“ bāϟāĻŋ āĻ•āϰ⧇ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻŋāϝāĻŧ⧇āϛ⧇ āĨ¤ āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻĻ⧇āĻļāĻĒā§āϰ⧇āĻŽāĻŋāĻ• āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āϰāĻž āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĻ⧇āĻļ⧇āϰ āφāϰ⧋ n āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ⧇āϰ 32 āϟāĻŋ āĻŸā§€āĻŽā§‡āϰ āĻĒā§āϰāϤāĻŋ āϏāĻŽā§āĻŽāĻžāύ āĻĻ⧇āĻ–āĻŋāϝāĻŧ⧇ āϤāĻžāϰāĻž āĻŽā§‹āϟ 32 āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āϤāĻžāĻĻ⧇āϰ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§āϰāĻžāϜāĻŋāϞ āĻ“ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻžāϰ āĻĒāϤāĻžāĻ•āĻžāϰ āĻĨ⧇āϕ⧇ āĻŦ⧇āĻļāĻŋ āĻšāϞ⧇ āĻāĻŦāĻ‚ āϏāĻŦ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇ {a, b, n} āĻāϰ āĻ•āϤāϟāĻŋ āĻŦāĻŋāĻ­āĻŋāĻ¨ā§āύ āϏ⧇āϟ āĻĨāĻžāĻ•āĻž āϏāĻŽā§āĻ­āĻŦ?
There are a number of citizen who supports Argentina, and b number of citizen who support Brazil in Newton City. All of them raised the flag of their supported teams for world cup. The citizen of Newton City wants to raise n more flags. To honor the 32 teams participating in world cup, they want to raise 32 flags in total. If the number of their own flag is more than the number of flags of Brazil and Argentina, how many
5. āϰāϜāϤ⧇āϰ āĻ•āĻžāϛ⧇ 9āϟāĻž āφāϞāĻžāĻĻāĻž āϧāϰāύ⧇āϰ āϜāĻžāĻ°ā§āϏāĻŋ āφāϛ⧇āĨ¤ āϏ⧌āϰāĻ­ ā§§āϟāĻž āĻāĻŦāĻ‚ āĻļāĻžāύ 4āϟāĻž āϜāĻžāĻ°ā§āϏāĻŋ āϚāĻžāχāϞāĨ¤ āĻāĻ–āύ āϰāϜāϤ āĻĻ⧇āĻ–āϞ āϏ⧇ 9āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ āϏ⧌āϰāϭ⧇āϰ āϜāĻ¨ā§āϝ 5āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 126āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āφāĻŦāĻžāϰ āĻļāĻžāύ⧇āϰ āϜāĻ¨ā§āϝ⧇āĻ“ ā§­āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āĻĨ⧇āϕ⧇ 4āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ 126āĻ­āĻžāĻŦ⧇ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āĻŽāĻžāϰāϜāĻžāύ āϰāϜāϤāϕ⧇ 1āϟāĻŋ āύāϤ⧁āύ āϜāĻžāĻ°ā§āϏāĻŋ āĻĻāĻŋāϞāĨ¤ āĻāĻŦāĻžāϰ āϰāϜāϤ āϏ⧌āϰāϭ⧇āϰ 5āϟāĻŋ āϜāĻžāĻ°ā§āϏāĻŋ āϜāĻ¨ā§āϝ āĻ•āϤ āĻ­āĻžāĻŦ⧇ āϜāĻžāĻ°ā§āϏāĻŋ āĻŦāĻžāĻ›āĻžāχ āĻ•āϰāϤ⧇ āĻĒāĻžāϰ⧇?
Rajat has 9 different jerseys. Saurav wants 5 and Shaan wants 4 jerseys. Now Rajat can choose 5 jerseys from the 9 in 126 ways. He can also choose the 4 for Shaan in 126 Ways. Rajat gets another jersey from Marzaan. Now, in how many ways may he
choose 5 jerseys for Saurav ?
6. āϤāĻŋāύ āĻ…āĻ™ā§āϕ⧇āϰ āĻāĻŽāύ āĻāĻ•āϟāĻŋ āϏāĻ‚āĻ–ā§āϝāĻž āύ⧇āĻ“āϝāĻŧāĻž āĻšāϞ āϝāĻžāϰ āĻļāϤāĻ• āĻ“ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāύ⧀āϝāĻŧ āĻ…āĻ™ā§āϕ⧇āϰ āϗ⧁āĻŖāĻĢāϞ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻĨ⧇āϕ⧇ 17. āĻŦ⧇āĻļā§€ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻ…āĻ™ā§āĻ• āϤāĻŋāύāϟāĻŋ āϝ⧋āĻ— āĻ•āϰāϞ⧇ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϝāĻŧāĨ¤ āĻāĻ–āύ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāĻžāύ⧀āϝāĻŧ āĻ…āĻ™ā§āĻ•āϟāĻŋ āĻāĻ•āϟāĻŋ āĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻ“ āĻāĻ•āϟāĻŋ āϘāύ āϏāĻ‚āĻ–ā§āϝāĻžāϰ āĻ—āĻĄāĻŧ⧇āϰ āϏāĻŽāĻžāύ āĻšāϞ⧇, āϏāĻ‚āĻ–ā§āϝāĻžāϟāĻŋāϰ āϏāĻ°ā§āĻŦāύāĻŋāĻŽā§āύ āĻŽāĻžāύ āĻ•āϤ?
There is a 3 digit number such that the product of the digits at tens place and hundreds place is 17 greater than a perfect square number and the sum of the 3 digits is a perfect square number. Again the digit at tens place is the average of a square number and a cubic number. What is the minimum value of this 3 digit number?
7. ABCD āĻāĻ•āϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āĻšāĻŦ⧇ āϝāĻĻāĻŋ CD > AB āĻšāϝāĻŧāĨ¤ (1213 āĻāĻ•āϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇āĻ“ 1210 āύāĻžāĨ¤ āĻ•āϤāϟāĻŋ āĻŽāĻžāĻĨāĻžāĻŽā§‹āϟāĻž āϏāĻ‚āĻ–ā§āϝāĻž āφāϛ⧇?
ABCD is called a dumb-headed number if CD> AB. Like 1213 is a dumb-headed number, but 1210 is not. How many dumb – headed numbers are there?
8. bac āĻāĻŦāĻ‚ cab āφāϟ āĻ­āĻŋāĻ¤ā§āϤāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§āϝāĻžāĻŦāĻ¸ā§āĻĨāĻžāϰ āĻĻ⧁āχāϟāĻŋ āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ bac āĻāĻŦāĻ‚ cab āωāĻ­āϝāĻŧ⧇āχ a āĻĻā§āĻŦāĻžāϰāĻž āĻŦāĻŋāĻ­āĻžāĻœā§āϝāĨ¤ āĻ•āĻŋāĻ¨ā§āϤ⧁ b-c, a āĻĻā§āĻŦāĻžāϰāĻž āĻŦāĻŋāĻ­āĻžāĻœā§āϝ āύāϝāĻŧāĨ¤ a āĻāϰ āϏāĻ°ā§āĻŦā§‹āĻšā§āϚ āĻŽāĻžāύ āĻ•āϤ āĻšāϤ⧇ āĻĒāĻžāϰ⧇?
bac and cab are two integer in 8-base number system. bac and cab both are divisible by a. But, b-c isn’t divisible by a. What is the highest value of a?
9. ABC āĻ¤ā§āϰāĻŋāϭ⧁āĻœā§‡ āĻ…āĻ¨ā§āϤāĻ°ā§āĻŦāĻ¤ā§āϤ AB, BC āĻ“ CA āĻŦāĻžāĻšā§āϕ⧇ āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ P, Q āĻ“ R āĻŦāĻŋāĻ¨ā§āĻĻ⧁āϤ⧇ āĻ¸ā§āĻĒāĻ°ā§āĻļ āĻ•āϰ⧇āĨ¤ BQ=23, QC=27 āĻāĻŦāĻ‚ āĻĒāϰāĻŋāϏ⧀āĻŽāĻž= 345; āĻ¤ā§āϰāĻŋāϭ⧁āĻœā§‡āϰ āĻ…āĻ¨ā§āϤāσāĻŦā§āϝāĻžāϏāĻžāĻ°ā§āϧ āĻ•āϤ?
The circumscribed circle of triangle ABC touches side AB, BC, CA at P, Q, R points. If BQ=23, QC=27 and the perimeter is 345, then find the inscribed circle’s radius of the triangle?
10. p āĻāĻŦāĻ‚ q āĻĻ⧁āχāϟāĻŋ āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ (p^2-q) āĻāĻŦāĻ‚ (p-q^2) āωāĻ­āϝāĻŧāχ āφāĻŦāĻžāϰ āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ āϝāĻĻāĻŋ āϤ⧁āĻŽāĻŋ āϕ⧋āύ āϝ⧌āĻ—āĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž n āĻĻā§āĻŦāĻžāϰāĻž (p^2-q) āϕ⧇ āĻ­āĻžāĻ— āĻ•āϰ⧋ āϝ⧇āĻ–āĻžāύ⧇ n<p, āϤāĻžāĻšāϞ⧇ āĻ­āĻžāĻ—āĻļ⧇āώ āĻĒāĻžāĻ“āϝāĻŧāĻž āϝāĻžāϝāĻŧ 14āĨ¤ āϝāĻĻāĻŋ āĻāĻ•āχ āϏāĻ‚āĻ–ā§āϝāĻž āĻĻāĻŋāϝāĻŧ⧇ (p-q^2+14) āϕ⧇ āĻ­āĻžāĻ— āĻ•āϰāĻž āĻšāϝāĻŧ, āϤāĻžāĻšāϞ⧇ āĻāχāĻ•ā§āώ⧇āĻ¤ā§āϰ⧇ āĻ­āĻžāĻ—āĻļ⧇āώ āĻ•āϤ āĻšāĻŦ⧇?
p and q are two prime number. Again, (p^2-q) and (p-q^2)  are also prime. If you divide (p^2-q) by a composite number n where n<p you’ll get a remainder of 14. If you divide (p-q^2+14) by the same number what will you get as remainder this time?

 

Higher Secondary Category

1. āĻ—āύāĻŋ āϏāĻžāĻšā§‡āĻŦ⧇āϰ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻĒ⧁āĻ¤ā§āϰ⧇āϰ āϏāĻŽāĻžāύ āϏāĻ‚āĻ–ā§āϝāĻ• āĻ­āĻžāχ āĻ“ āĻŦā§‹āύ āφāϛ⧇, āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻĒā§āϰāĻ¤ā§āϝ⧇āĻ• āĻ•āĻ¨ā§āϝāĻžāϰ āĻ­āĻžāχāϝāĻŧ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§‹āύ⧇āϰ āϏāĻ‚āĻ–ā§āϝāĻžāϰ 2 āϗ⧁āύāĨ¤ āϤāĻžāϰ āĻĒ⧁āĻ¤ā§āϰ āĻ“ āĻ•āĻ¨ā§āϝāĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āύāĻŋāĻ°ā§āĻŖāϝāĻŧ āĻ•āϰāĨ¤
Mr Goni’s each son has equal number of brother and sister. But each daughter has twice brothers as many as sisters. Find the number of his daughter and son.
2. āĻ•āĻ™ā§āĻ•āĻž āĻŽāĻžāϝāĻŧ⧇āϰ āĻ•āĻžāϛ⧇ āϚāĻ•āϞ⧇āϟ āϖ⧇āϤ⧇ āϚāĻžāχāϞ⧋āĨ¤ āĻŽāĻž āĻ•āĻ™ā§āĻ•āĻžāϕ⧇ āϚāĻ•āϞ⧇āϟ āĻĻāĻŋāϞ āĻāχāĻ­āĻžāĻŦ⧇, āĻĒā§āϰāĻĨāĻŽ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ 1āϟāĻž | āϚāĻ•āϞ⧇āϟ, āĻĻā§āĻŦāĻŋāϤ⧀āϝāĻŧ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ 2āϟāĻž āϚāĻ•āϞ⧇āϟ āϤāĻžāϰāĻĒāϰ⧇āϰ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ āĻ•āĻŋāϛ⧁ āĻĻāĻŋāϞ āύāĻž, āφāĻŦāĻžāϰ āϚāϤ⧁āĻ°ā§āĻĨ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ 4āϟāĻž ¡ āĻĒāĻžā§āϚāĻŽ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ āϘāϟāĻž, āĻāϰāĻĒāϰ⧇āϰ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ āĻ•āĻŋāϛ⧁ āĻĻāĻŋāϞ āύāĻžāĨ¤ āĻāĻ­āĻžāĻŦ⧇ āĻĒāϰ āĻĒāϰ 2 āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ āϚāĻ•āϞ⧇āϟ āĻĻ⧇āϝāĻŧ āĻĒāϰ⧇āϰ āϏ⧇āϕ⧇āĻ¨ā§āĻĄā§‡ āĻĻ⧇āϝāĻŧ āύāĻžāĨ¤ āĻ•āĻ™ā§āĻ•āĻž āϝāĻĻāĻŋ 120 āϏ⧇āϕ⧇āĻ¨ā§āĻĄ āĻĒāĻ°ā§āϝāĻ¨ā§āϤ āϚāĻ•āϞ⧇āϟ āĻĒāĻžāϝāĻŧ āϤāĻŦ⧇ āĻŽā§‹āϟ āĻ•āϝāĻŧāϟāĻž āϚāĻ•āϞ⧇āϟ āĻĒāĻžāĻŦ⧇ ?
Kanka wants chocolate from her mother. Kanka’s mother gives her chocolate in this way, she gives 1 chocolate in 1st second, 2 chocolate in 2nd second, but nothing in 3rd second again 4 chocolates in 4th second, 5 chocolate in 5th second, but nothing on 6th second. So her mother doesn’t give her any chocolate after every two seconds. After 120 seconds, how many chocolate will be possessed by Kanka?

3. āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āĻĻ⧇āϰ āĻŽāĻ§ā§āϝ⧇ ā§Ģ āϜāύ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻž āĻāĻŦāĻ‚ ā§Ž āϜāύ āĻŦā§āϰāĻžāϜāĻŋāϞ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āϟāĻžāϰ āĨ¤ āϤāĻžāϰāĻž āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ āωāĻĒāϞāĻ•ā§āώ⧇ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āϏāĻžāĻĒā§‹āĻ°ā§āĻŸā§‡āϰ āĻĻāϞ⧇āϰ āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ a āĻ“ bāϟāĻŋ āĻ•āϰ⧇ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻŋāϝāĻŧ⧇āϛ⧇ āĨ¤ āύāĻŋāωāϟāύāύāĻ—āϰ⧇āϰ āĻĻ⧇āĻļāĻĒā§āϰ⧇āĻŽāĻŋāĻ• āĻ…āϧāĻŋāĻŦāĻžāϏ⧀āϰāĻž āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĻ⧇āĻļ⧇āϰ āφāϰ⧋ n āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻŦāĻŋāĻļā§āĻŦāĻ•āĻžāĻĒ⧇āϰ 32 āϟāĻŋ āĻŸā§€āĻŽā§‡āϰ āĻĒā§āϰāϤāĻŋ āϏāĻŽā§āĻŽāĻžāύ āĻĻ⧇āĻ–āĻŋāϝāĻŧ⧇ āϤāĻžāϰāĻž āĻŽā§‹āϟ 32 āϟāĻŋ āĻĒāϤāĻžāĻ•āĻž āωāĻĄāĻŧāĻžāϤ⧇ āϚāĻžāϝāĻŧ āĨ¤ āϤāĻžāĻĻ⧇āϰ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§āϰāĻžāϜāĻŋāϞ āĻ“ āφāĻ°ā§āĻœā§‡āĻ¨ā§āϟāĻŋāύāĻžāϰ āĻĒāϤāĻžāĻ•āĻžāϰ āĻĨ⧇āϕ⧇ āĻŦ⧇āĻļāĻŋ āĻšāϞ⧇ āĻāĻŦāĻ‚ āϏāĻŦ āĻĒāϤāĻžāĻ•āĻžāϰ āϏāĻ‚āĻ–ā§āϝāĻž āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϞ⧇ a × b × n āĻāϰ āϏāĻ°ā§āĻŦāύāĻŋāĻŽā§āύ āĻŽāĻžāύ āĻ•āϤ?
There are a number of citizen who supports Argentina, and b number of citizen who support Brazil in Newton City. All of them raised the flag of their supported teams for world cup. The citizen of Newton City wants to raise n more flags. To honor the 32 teams participating in world cup, they want to raise 32 flags in total. If the number of their own flag is more than the number of flags of Brazil and Argentina, find minimum possible value of axb×n. All the flag numbers are prime numbers.
4. ABCD āĻāĻ•āϟāĻŋ āϰāĻŽā§āĻŦāϏ āϝ⧇āĻ–āĻžāύ⧇ AB= 2√3 āĻāĻŦāĻ‚ ∠ABC = 60° āĨ¤ ABCD āĻāϰ āĻāϰ āĻ­āĻŋāϤāϰ⧇ āĻĨāĻžāϕ⧇ āĻāĻŽāύ āĻŦ⧃āĻ¤ā§āϤ⧇āϰ āĻŦā§āϝāĻžāϏāĻžāĻ°ā§āϧ⧇āϰ āϏāĻ°ā§āĻŦā§‹āĻšā§āϚ āĻŽāĻžāύ āĻ•āϤ āĻšāĻŦ⧇?
ABCD is a rhombus. AB = 2 √3 and ∠ABC = 60°. What is the maximum radius of the circle that can be drawn in ABCD?

5. āϤāĻŋāύ āĻ…āĻ™ā§āϕ⧇āϰ āĻāĻŽāύ āĻāĻ•āϟāĻŋ āϏāĻ‚āĻ–ā§āϝāĻž āύ⧇āĻ“āϝāĻŧāĻž āĻšāϞ āϝāĻžāϰ āĻļāϤāĻ• āĻ“ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāύ⧀āϝāĻŧ āĻ…āĻ™ā§āϕ⧇āϰ āϗ⧁āĻŖāĻĢāϞ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻĨ⧇āϕ⧇ 17 āĻŦ⧇āĻļā§€ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻ…āĻ™ā§āĻ• āϤāĻŋāύāϟāĻŋ āϝ⧋āĻ— āĻ•āϰāϞ⧇ āĻāĻ•āϟāĻŋ āĻĒā§‚āĻ°ā§āĻŖāĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻšāϝāĻŧāĨ¤ āĻāĻ–āύ āĻĻāĻļāĻ• āĻ¸ā§āĻĨāĻžāύ⧀āϝāĻŧ āĻ…āĻ™ā§āĻ•āϟāĻŋ āĻāĻ•āϟāĻŋ āĻŦāĻ°ā§āĻ— āϏāĻ‚āĻ–ā§āϝāĻž āĻ“ āĻāĻ•āϟāĻŋ āϘāύ āϏāĻ‚āĻ–ā§āϝāĻžāϰ āĻ—āĻĄāĻŧ⧇āϰ āϏāĻŽāĻžāύ āĻšāϞ⧇, āϏāĻ‚āĻ–ā§āϝāĻžāϟāĻŋāϰ āϏāĻŽā§āĻ­āĻžāĻŦā§āϝ āĻŽāĻžāύ/āĻŽāĻžāύāϗ⧁āϞ⧋ āĻ•āϤ?

There is a 3 digit number such that the product of the digits at tens place and hundreds place is 17 greater than a perfect square number and the sum of the 3 digits is a perfect square number. Again the digit at tens place is the average of a square number and a cubic number. What is/are the value(s) of this 3 digit number?
6. āĻĒāĻžāρāϚāϟāĻŋ āĻŦāχāϝāĻŧ⧇āϰ āĻĒā§āϰāϤāĻŋāϟāĻŋāϰ āĻĻ⧈āĻ°ā§āĻ˜ā§āϝ, āĻĒā§āϰāĻ¸ā§āĻĨ, āωāĻšā§āϚāϤāĻž āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ 10, 10, 3 āĻāĻ•āĻ•āĨ¤ āĻĒā§āϰāĻĨāĻŽā§‡ āĻŦāχāϗ⧁āϞ⧋āϕ⧇ āĻāĻ•āϟāĻŋāϰ āωāĻĒāϰ āφāϰ⧇āĻ•āϟāĻŋ āĻĒā§āϰāĻĨāĻŽ āϚāĻŋāĻ¤ā§āϰ⧇āϰ āĻŽāϤ āĻ•āϰ⧇ āϰāĻžāĻ–āĻž āĻšāϞāĨ¤ āĻĒāϰ⧇ āĻāĻ•āϟāĻŋ āϞāĻžāĻ āĻŋāϰ āϏāĻžāĻšāĻžāĻ¯ā§āϝ⧇ āϤāĻžāϕ⧇ āĻĒāϰ⧇āϰ āϚāĻŋāĻ¤ā§āϰ⧇āϰ āĻŽāϤ āĻ•āϰ⧇ āĻŦāĻžāĻ•āĻžāύ⧋ āĻ…āĻŦāĻ¸ā§āĻĨāĻžāϝāĻŧ āϰāĻžāĻ–āĻž āĻšāϞāĨ¤ āĻāϤ⧇ āĻŽā§āĻ•ā§āϤ āĻĒ⧃āĻˇā§āϠ⧇āϰ āĻ•ā§āώ⧇āĻ¤ā§āϰāĻĢāϞ āĻŦāĻžāĻĄāĻŧāϞ ā§Ēā§Ļ āĻŦāĻ°ā§āĻ— āĻāĻ•āĻ•āĨ¤ āĻ­ā§‚āĻŽāĻŋāϰ āϏāĻžāĻĨ⧇ āϞāĻžāĻ āĻŋāϟāĻŋāϰ āĻ‰ā§ŽāĻĒāĻ¨ā§āύ āϏ⧂āĻ•ā§āώāϕ⧋āϪ⧇āϰ āĻŽāĻžāύ āĻ•āϤ? [āωāĻ¤ā§āϤāϰ āĻŦāĻŋāĻĒāϰ⧀āϤ āĻŦ⧃āĻ¤ā§āϤ⧀āϝāĻŧ āĻĢāĻžāĻ‚āĻļāύ⧇āϰāϰ āφāĻ•āĻžāϰ⧇ āϞāĻŋāĻ–āĨ¤]

%Focuse keyword%
Five identical books have a length, width and height of 10, 10 and 3 unit. At first, the books are arranged in a way like first figure. Then with a stick, the books are arranged in a bended way like the next figure. In this way, open surface area is increased by 80 square units. Determine the acute angle of the stick produced with the horizontal line. [Write the answer in inverse circular function.]

7. bac āĻāĻŦāĻ‚ cab āφāϟ āĻ­āĻŋāĻ¤ā§āϤāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž āĻŦā§āϝāĻžāĻŦāĻ¸ā§āĻĨāĻžāϰ āĻĻ⧁āχāϟāĻŋ āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ bac āĻāĻŦāĻ‚ cab āωāĻ­āϝāĻŧ⧇āχ a āĻĻā§āĻŦāĻžāϰāĻž āĻŦāĻŋāĻ­āĻžāĻœā§āϝāĨ¤ āĻ•āĻŋāĻ¨ā§āϤ⧁ b-c, a āĻĻā§āĻŦāĻžāϰāĻž āĻŦāĻŋāĻ­āĻžāĻœā§āϝ āύāϝāĻŧāĨ¤ a āĻāϰ āϏāĻ°ā§āĻŦā§‹āĻšā§āϚ āĻŽāĻžāύ āĻ•āϤ āĻšāϤ⧇ āĻĒāĻžāϰ⧇?
bac and cab are two integer in 8-base number system. bac and cab both are divisible by a. But, b-c isn’t divisible by a. What is the highest value of a?
8. a, b, c āϤāĻŋāύāϟāĻŋ āϧāύāĻžāĻ¤ā§āĻŽāĻ• āĻĒā§‚āĻ°ā§āĻŖ āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ (p, q) = k āĻŦāϞāϤ⧇ āĻŦā§‹āĻāĻžāύ⧋ āĻšāϝāĻŧ āϝ⧇ P, q āĻāϰ āĻ—āϏāĻžāϗ⧁ k. āĻāĻ–āύ, āϝāĻĻāĻŋ (a, b) =2, (b, c) =3 āĻāĻŦāĻ‚ (c, a) = 5 āĻšāϝāĻŧ āϤāĻžāĻšāϞ⧇ axbxe āĻāϰ āĻ•ā§āώ⧁āĻĻā§āϰāϤāĻŽ āĻŽāĻžāύ āĻ•āϤ? a, b, c are three positive integers. The notation (pq) =k means the GCD of the number p and q is k.Now, if (a, b) =2, (b, c) =3 and (c, a) = 5. Then what is the lowest value of axbxc?
9. ABC āĻ¤ā§āϰāĻŋāϭ⧁āĻœā§‡ āĻ…āĻ¨ā§āϤāĻ°ā§āĻŦ⧃āĻ¤ā§āϤ āϝāĻžāϰ āϕ⧇āĻ¨ā§āĻĻā§āϰ AB, BC āĻ“ CA āĻŦāĻžāĻšā§āϕ⧇ āϝāĻĨāĻžāĻ•ā§āϰāĻŽā§‡ P, Q āĻ“ R āĻŦāĻŋāĻ¨ā§āĻĻ⧁āϤ⧇ āĻ¸ā§āĻĒāĻ°ā§āĻļ āĻ•āϰ⧇āĨ¤ BQ=23, QC=27 āĻāĻŦāĻ‚ āĻĒāϰāĻŋāϏ⧀āĻŽāĻž=345| IB= \sqrt{a} āĻšāϞ⧇ a=?
The circumscribed circle (with center I) of triangle ABC touches side AB, BC, CA at P, Q, R points. If BQ=23, QC=27 and the perimeter is 345. If IB= Va then a=?
10. p āĻāĻŦāĻ‚ q āĻĻ⧁āχāϟāĻŋ āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ (p^2-q) āĻāĻŦāĻ‚ (p-q^2) [latex] āωāĻ­āϝāĻŧāχ āφāĻŦāĻžāϰ āĻŽā§ŒāϞāĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻžāĨ¤ āϝāĻĻāĻŋ āϤ⧁āĻŽāĻŋ āϕ⧋āύ āϝ⧌āĻ—āĻŋāĻ• āϏāĻ‚āĻ–ā§āϝāĻž n āĻĻā§āĻŦāĻžāϰāĻž [latex] (p^2-q) āϕ⧇ āĻ­āĻžāĻ— āĻ•āϰ⧋ āϝ⧇āĻ–āĻžāύ⧇ n<p, āϤāĻžāĻšāϞ⧇ āĻ­āĻžāĻ—āĻļ⧇āώ āĻĒāĻžāĻ“āϝāĻŧāĻž āϝāĻžāϝāĻŧ 14āĨ¤ āϝāĻĻāĻŋ āĻāĻ•āχ āϏāĻ‚āĻ–ā§āϝāĻž āĻĻāĻŋāϝāĻŧ⧇ (p-q^2+14) [latex] āϕ⧇ āĻ­āĻžāĻ— āĻ•āϰāĻž āĻšāϝāĻŧ, āϤāĻžāĻšāϞ⧇ āĻāχāĻ•ā§āώ⧇āĻ¤ā§āϰ⧇ āĻ­āĻžāĻ—āĻļ⧇āώ āĻ•āϤ āĻšāĻŦ⧇?</span><br /> <span style="font-size: 18pt;">p and q are two prime number. Again, [latex] (p^2-q) and (p-q^2) [latex] are also prime. If you divide [latex] (p^2-q) by a composite number n where n<p you'll get a remainder of 14. If you divide (p-q^2+14) by the same number what will you get as remainder this time?

 

bdmo-2015-all-questions

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