BD Math Olympiad regional questions 2023
1. āĻāĻāĻāĻŋ āĻŦāĻžāϞāϤāĻŋāϤ⧠āϞāĻžāϞ, āύā§āϞ āĻāĻŦāĻ āϏāĻŦā§āĻ āϰāĻā§āϰ āϝāĻĨāĻžāĻā§āϰāĻŽā§ 1971, 1952 āĻāĻŦāĻ 2022 āĻāĻŋ āĻŦāϞ āϰā§ā§āĻā§āĨ¤ āĻā§ āϤāĻžāϰ āĻā§āĻ āĻŦā§āĻāϧ⧠āĻāĻŋāĻā§ āĻŦāϞ āĻŦāĻžāϞāϤāĻŋ āĻĨā§āĻā§ āϤā§āϞāϤ⧠āĻŦāϞāĻž āĻšāϞāĨ¤ āύā§āϝā§āύāϤāĻŽ āĻāϤāĻāĻŋ āĻŦāϞ āϤā§āϞāϞ⧠āĻā§ āύāĻŋāĻļā§āĻāĻŋāϤāĻāĻžāĻŦā§ āĻŦāϞāϤ⧠āĻĒāĻžāϰāĻŦā§ āϝā§, āϏ⧠āĻĒā§āϰāϤāĻŋāĻāĻŋ āϰāĻā§āϰ āĻāĻŽāĻĒāĻā§āώ⧠āĻāĻāĻāĻŋ āĻŦāϞ āϤā§āϞā§āĻā§?
A basket contains 1971, 1952 and 2022 balls of red, blue and green, respectively. Joy is blindfolded and he is asked to pick up some balls from the basket. After picking at least how many balls, Joy can surely say that he has picked at least one ball of each colour?
2. āĻĢā§ā§āĻžāĻĻā§āϰ āĻĒā§āϰāĻŋā§ āϏāĻāĻā§āϝāĻž 11, āϤāĻžāĻ āϏ⧠11 āĻĻā§āĻŦāĻžāϰāĻž āύāĻŋāĻāĻļā§āώ āĻŦāĻŋāĻāĻžāĻā§āϝ āϏāĻāϞ āϏāĻāĻā§āϝāĻžāĻā§ âāϏā§āύā§āĻĻāϰ āϏāĻāĻā§āϝāĻžâ āĻŦāϞā§āĨ¤ āĻĒāĻžāĻāĻ āĻ āĻā§āĻā§āϰ āĻŦā§āĻšāϤā§āϤāĻŽ āĻ āĻā§āώā§āĻĻā§āϰāϤāĻŽ âāϏā§āύā§āĻĻāϰ āϏāĻāĻā§āϝāĻžâ āĻāϰ āĻĒāĻžāϰā§āĻĨāĻā§āϝ āĻāϤ?
Fuad’s favourite number is 11, so he calls all numbers divisible by 11 ‘Beautiful Numbers’. What is the difference between the largest and smallest five-digit ‘Beautiful Number’?
3. āĻāĻŋāϤā§āϰ⧠â đ = ā§Ŧā§Ļ°, â đ = ā§ā§Ļ°, â đ = ā§Žā§Ļ° āĻšāϞ⧠â đ āĻāϰ āĻŽāĻžāύ āĻāϤ?

In the figure, â đ = đ0°, â đ = đ0°, â đđ = đ0°. What is the value of â đ?
4. 10 āĻāĻŋ āϏāĻāĻā§āϝāĻžāϰ āĻā§ 49āĨ¤ āϝāĻĻāĻŋ āĻĒā§āϰāϤāĻŋāĻāĻŋ āϏāĻāĻā§āϝāĻžāĻā§ 7 āĻĻāĻŋā§ā§ āĻāĻžāĻ āĻāϰāĻž āĻšā§ āĻāĻŦāĻ āĻāĻžāĻāĻĢāϞ-āĻāϰ āϏāĻžāĻĨā§ 5 āϝā§āĻ āĻāϰāĻž āĻšā§ āϤāĻŦā§ āĻĒāϰāĻŋāĻŦāϰā§āϤāĻŋāϤ āĻā§ āĻāϤ āĻšāĻŦā§?
The average of 10 numbers is 49. If each of the numbers is divided by 7 and the quotient is then added by 5, what is the changed average number?
5. āϰāĻŋāĻŽāϞ ā§Šā§ āĻļā§āϰā§āĻŖāĻŋāϤ⧠āĻĒā§ā§āĨ¤ āϏ⧠ā§ĢāĻŽ āĻļā§āϰā§āĻŖāĻŋāϰ āĻāĻŖāĻŋāϤ āĻŦāĻ āĻĒāĻžāĻļāĻžāĻĒāĻžāĻļāĻŋ āĻĒā§āϤ⧠āĻāĻžā§āĨ¤ āϏāĻĒā§āϤāĻžāĻšā§ ā§Ē āĻĻāĻŋāύ āϏ⧠āĻāĻŖāĻŋāϤ āĻĒā§ā§āĨ¤ āĻāϰ āĻŽāϧā§āϝ⧠āϏāϰā§āĻŦā§āĻā§āĻ āĻĻā§āĻ āĻĻāĻŋāύ āϏ⧠ā§ĢāĻŽ āĻļā§āϰā§āĻŖāĻŋāϰ āĻŦāĻ āĻĒā§āϤ⧠āĻĒāĻžāϰāĻŦā§ āĻāĻŦāĻ āĻāĻāĻĻāĻŋāύ⧠3 āĻĒā§āώā§āĻ āĻžāϰ āĻŦā§āĻļāĻŋ āĻĒā§āϤ⧠āĻĒāĻžāϰ⧠āύāĻžāĨ¤ āĻŦāĻāĻāĻŋāϤ⧠150 āĻĒā§āώā§āĻ āĻž āĻĨāĻžāĻāϞ⧠āϏ⧠āĻāĻžāύā§ā§āĻžāϰā§āϰ 10 āϤāĻžāϰāĻŋāĻ āĻĨā§āĻā§ āĻļā§āϰ⧠āĻāϰāϞ⧠āϏāϰā§āĻŦāύāĻŋāĻŽā§āύ āϝ⧠āϤāĻžāϰāĻŋāĻā§ āĻŦāĻāĻāĻŋ āĻĒā§ā§ āĻļā§āώ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āϤāĻž āύāĻŋāϰā§āĻŖā§ āĻāϰāĨ¤
Rimil is in third standard. She wants to study 5th standard’s mathematics book as well as his third standard mathematics book. She cannot read more than 3 pages a day and there are 150 pages of that book. If she started reading that book from 10th January, which is the quickest date she will finish the book?
6. đ, đ, đ, đ , đ, đ āϏāĻāĻā§āϝāĻž 1 āĻĨā§āĻā§ 6 āĻĒāϰā§āϝāύā§āϤ āĻā§āĻāĻŋ āϏāĻāĻā§āϝāĻž āĻŦā§āĻāĻžā§āĨ¤ đ + đ = đ, đ + đ = đ , đ + đ = đ āĻšāϞ⧠đ āĻāϰ āĻŽāĻžāύ āĻāϤ?
The variables đ, đ, đ, đ
, đ and đ each represent exactly one of the integers đ through đ. Given the following facts, which integer is represented by đ? đ + đ = đ, đ + đ = đ
, đ + đ = đ
7. āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž 815 āĻāĻŋ āĻŽāĻžāϰā§āĻŦā§āϞ āĻŦāĻžāĻā§āϏ⧠āĻāϰ⧠āϰāĻžāĻāĻāĻŋāϞāĨ¤ āϤāĻžāϰ āĻāĻžāĻā§ 10, 25, 50 āĻ
āĻĨāĻŦāĻž 100 āĻŽāĻžāϰā§āĻŦā§āϞ āϧāĻžāϰāĻŖ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŽāύ āĻŦāĻžāĻā§āϏ āϰā§ā§āĻā§āĨ¤ āϝāĻĻāĻŋ āĻāĻĻāĻŋā§āύ āĻĒā§āϰāϤāĻŋ āϏāĻžāĻāĻā§ āϏāϰā§āĻŦā§āĻā§āĻ 5āĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŦāĻ āĻĒā§āϰāϤāĻŋāĻāĻŋ āĻŦāĻžāĻā§āϏ āϤāĻžāĻā§ āĻĒā§āϰā§āĻŖāĻāĻžāĻŦā§ āĻāϰāϤ⧠āĻšāĻŦā§, āϤāĻžāĻšāϞ⧠āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž āĻŽāĻžāϰā§āĻŦā§āϞāĻā§āϞ⧠āϰāĻžāĻāĻžāϰ āĻāύā§āϝ āĻāĻŽāĻĒāĻā§āώ⧠āĻāϤāĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻŦā§?
Adyan is packing 815 marbles into boxes. He has boxes that can hold 10, 25, 50 or 100 marbles. If Adyan can use at most 5 boxes of each size and must fill each box he uses, what is the minimum number of boxes he requires to pack all the marbles to pack 815 marbles?
8. āϰāĻĢāĻŋāĻ āĻāĻŦāĻ āĻļāĻĢāĻŋāĻā§āϰ āĻāĻžāĻā§ āϝāĻĨāĻžāĻā§āϰāĻŽā§ 219 āĻāĻŦāĻ 133āĻāĻŋ āĻāĻā§āϞā§āĻ āϰā§ā§āĻā§āĨ¤ āϰāĻĢāĻŋāĻ āĻĒā§āϰāϤāĻŋāĻĻāĻŋāύ 5āĻāĻŋ āĻāĻā§āϞā§āĻ āĻāĻžā§ āĻāĻŦāĻ āĻļāĻĢāĻŋāĻ āĻĒā§āϰāϤāĻŋāĻĻāĻŋāύ 3āĻāĻŋ āĻāĻā§āϞā§āĻ āĻāĻžā§āĨ¤ āĻāĻŋāĻā§āĻĻāĻŋāύ āĻĒāϰā§, āĻĻā§āĻāύā§āϰ āĻāĻžāĻā§ āĻāĻāĻ āϏāĻāĻā§āϝāĻ āĻāĻā§āϞā§āĻ āĻāĻŋāϞāĨ¤ āϤāĻāύ āĻĻā§āĻāύā§āϰ āĻāĻžāĻā§ āĻā§āĻāĻŋ āĻāĻā§āϞā§āĻ āĻāĻŋāϞ?
Rafiq and Shafiq have 219 and 133 chocolates. Rafiq eats 5 chocolates a day and Shafiq eats 3 chocolates a day. After some days, both had the same number of chocolates. How chocolates each of them had that day?
Junior category
1. 3 āĻāĻŋ āϧāύāĻžāϤā§āĻŽāĻ āĻĒā§āϰā§āĻŖāϏāĻāĻā§āϝāĻžāϰ āĻā§ 2 āĻšāϞā§, āϤāĻžāĻĻā§āϰ āĻŽāϧā§āϝ⧠āϏāĻŦāĻā§ā§ā§ āĻŦā§ āϏāĻāĻā§āϝāĻž āĻāϤ?
If the average of 3 different positive integers is 2, then what is the value of the highest number among them?
2. 7 āĻāĻŋ āĻā§āϰāĻŽāĻŋāĻ āĻŽā§āϞāĻŋāĻ āϏāĻāĻā§āϝāĻžāϰ āϝā§āĻāĻĢāϞ 58āĨ¤ āϤāĻžāĻšāϞ⧠āϤāĻžāĻĻā§āϰ āĻŽāϧā§āϝ⧠āϏāĻŦāĻā§ā§ā§ āĻŦā§ āĻāĻŦāĻ āϏāĻŦāĻā§ā§ā§ āĻā§āĻ āĻŽā§āϞāĻŋāĻ āϏāĻāĻā§āϝāĻž āĻĻā§āĻāĻŋāϰ āϝā§āĻāĻĢāϞ āĻāϤ?
The sum of 7 consecutive prime numbers is 58. Then what is the sum of the highest and lowest prime numbers among them?
3. āĻĢā§ā§āĻžāĻĻ āĻāĻāĻāĻŋ āĻāĻžāĻŖāĻŋāϤāĻŋāĻ āϧāĻžāϰāĻž āύāĻŋā§ā§ āĻāĻžāĻ āĻāϰāĻā§ āϏāĻāĻžāϞ āĻĨā§āĻā§āĨ¤ āĻāĻŋāύā§āϤ⧠āϏ⧠āϧāĻžāϰāĻž āϏāĻŽāĻžāϧāĻžāύ āĻāϰāϤ⧠āĻĒāĻžāϰāĻā§ āύāĻžāĨ¤ āϧāĻžāϰāĻžāĻāĻŋ āĻšāϞ đ0, đ5, đ2, đ3, đ6, đŋ, đ, đ35āĨ¤ āĻĢā§ā§āĻžāĻĻā§āϰ āĻāĻžāĻā§ āĻāĻŋāϞ đ = đŋ + đ āĻšāϞ⧠đ āĻāϰ āĻŽāĻžāύ āĻāϤ?
Fuad has been working on a mathematical series since morning. But still, he could not solve the series. Here is the series đ0, đ5, đ2, đ3, đ6, đŋ, đ, đ35. The question to Fuad was đ = đŋ + đ, what is the value of đ? Now your task is to find the value of đ.
4. āĻĻā§āĻāĻŋ āĻ āĻā§āĻā§āϰ āĻāϤāĻā§āϞ⧠āϏāĻāĻā§āϝāĻž āϰā§ā§āĻā§, āϝāĻžāĻĻā§āϰ āĻ āĻā§āĻāĻā§āϞāĻŋāϰ āĻā§āĻŖāĻĢāϞ āĻāĻāĻāĻŋ āĻŦāϰā§āĻāϏāĻāĻā§āϝāĻž?
How many two-digit numbers are there, whose product of the digits is a square number?
5. đ, đ, đ, đ , đ, āĻāĻŦāĻ đ āĻĒā§āϰāϤā§āϝā§āĻāĻāĻŋ āĻŦāϰā§āĻŖ 1 āĻĨā§āĻā§ 6 āĻĒāϰā§āϝāύā§āϤ āĻ āĻŋāĻ āĻāĻāĻāĻŋ āĻāϰ⧠āϏāĻāĻā§āϝāĻž āύāĻŋāϰā§āĻĻā§āĻļ āĻāϰ⧠āĨ¤ āύāĻŋāĻā§āϰ āϤāĻĨā§āϝāĻā§āϞā§āϰ āĻāĻĒāϰ āĻāĻŋāϤā§āϤāĻŋ āĻāϰ⧠đ āĻāϰ āĻŽāĻžāύ āĻāϤ āĻšāĻŦā§? đ + đ = đ, đ + đ = đ , đ + đ = đ
The letters đ, đ, đ, đ , đ, and đ each represent exactly one of the integers from 1 to 6. Given the following facts below, which integer is represented by đ ? đ + đ = đ, đ + đ = đ , đ + đ = đ
6. āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž 815 āĻāĻŋ āĻŽāĻžāϰā§āĻŦā§āϞ āĻŦāĻžāĻā§āϏ⧠āĻāϰ⧠āϰāĻžāĻāĻāĻŋāϞāĨ¤ āϤāĻžāϰ āĻāĻžāĻā§ 10, 25, 50 āĻ āĻĨāĻŦāĻž 100 āĻŽāĻžāϰā§āĻŦā§āϞ āϧāĻžāϰāĻŖ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŽāύ āĻŦāĻžāĻā§āϏ āϰā§ā§āĻā§āĨ¤ āϝāĻĻāĻŋ āĻāĻĻāĻŋā§āύ āĻĒā§āϰāϤāĻŋ āĻāĻāĻžāϰā§āϰ āϏāϰā§āĻŦā§āĻā§āĻ 5āĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŦāĻ āϤāĻžāϰ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž āĻĒā§āϰāϤāĻŋāĻāĻŋ āĻŦāĻžāĻā§āϏ āϤāĻžāĻā§ āĻŽāĻžāϰā§āĻŦā§āϞ āĻĻā§āĻŦāĻžāϰāĻž āĻĒā§āϰā§āĻŖāĻāĻžāĻŦā§ āĻāϰāϤ⧠āĻšāĻŦā§, āϤāĻžāĻšāϞ⧠āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž āĻŽāĻžāϰā§āĻŦā§āϞāĻā§āϞ⧠āϰāĻžāĻāĻžāϰ āĻāύā§āϝ āĻāĻŽāĻĒāĻā§āώ⧠āĻāϤāĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻŦā§?
Adyan is packing marbles into boxes. He has boxes that can hold 10,25,50 or 100 marbles. If Adyan can use at most 5 boxes of each size and must fill each box with marbles he uses, what is the minimum number of boxes he requires to pack all the marbles to pack 815 marbles?
7. āĻāĻāĻāĻŋ āĻĒā§āϝāĻžāĻāĻžāϰā§āύ āĻāĻŋāϤā§āϰ⧠āĻŽāϤ āĻāϞāϤ⧠āĻĨāĻžāĻāϞā§, ⧝āĻŽ āĻāĻŋāϤā§āϰ⧠āĻāϤāĻāĻŋ āĻŦā§āϤā§āϤ āĻĨāĻžāĻāĻŦā§?

If a pattern continues according to the figure, how many circles will there be in the 9th figure?
8. āĻāĻŋāϤā§āϰ⧠đ¨B||đŦF||đĒD, ÎđŠEC āĻāĻāĻāĻŋ āϏāĻŽāĻŦāĻžāĻšā§ āϤā§āϰāĻŋāĻā§āĻāĨ¤đŦF, đĒM āĻāĻŦāĻ BN āĻšāϞ āϤā§āϰāĻŋāĻā§āĻā§āϰ āϤāĻŋāύāĻāĻŋ āĻŽāϧā§āϝāĻŽāĻžāĨ¤ āϝāĻĻāĻŋ, âđ¨đŦđĒ āĻāϰ āĻā§āώā§āϤā§āϰāĻĢāϞ 3â3 āĻšā§, āϤāĻžāĻšāϞ⧠đ¨M + đĩD =?

In the figure, đ¨B||đŦF||đĒD, ÎđŠEC is an equilateral triangle, đŦF, đĒM and đŠN are the three medians of the triangle. If the area of, ÎđŠEC is đâđ,then đ¨M + đĩD =?
Secondary Category
1. āĻāĻŽāύ āĻā§āύ āĻāĻāĻāĻŋ āϞāĻŋāĻĢāĻā§āϰ āĻāĻĒāϰ⧠āĻāĻ āĻžāϰ āϏāĻŽā§ āĻĻā§āĻā§ āϝā§, āϞāĻŋāĻĢāĻ āĻā§āύ āĻāĻāĻāĻŋ āϤāϞāĻžā§ āĻĨāĻžāĻŽāϞ⧠āϏā§āĻāĻžāύ 10 āϏā§āĻā§āύā§āĻĄ āϏāĻŽā§ āĻĨāĻžāĻŽā§āĨ¤ āϞāĻŋāĻĢāĻ āĻā§āϞāϤ⧠āĻāĻŦāĻ āĻŦāύā§āϧ āĻāϰāϤ⧠āĻŽā§āĻ 5 āϏā§āĻā§āύā§āĻĄ āϏāĻŽā§ āϞāĻžāĻā§āĨ¤ āĻāĻ āϤāϞāĻž āĻĨā§āĻā§ āϤāĻžāϰ āĻāĻĒāϰā§āϰ āϤāϞāĻžā§ āϝā§āϤ⧠āϏāĻŽā§ āϞāĻžāĻā§ 1.5 āϏā§āĻā§āύā§āĻĄāĨ¤ āϝāĻĻāĻŋ āĻāĻŽāύ 1 āϤāϞāĻž āĻĨā§āĻā§ 10 āϤāϞāĻžā§ āϝāĻžā§, āϤāĻžāĻšāϞ⧠āϞāĻŋāĻĢāĻ āĻāϤāĻŦāĻžāϰ āĻĨāĻžāĻŽāĻŦā§ āĻāĻŦāĻ āĻāĻŽāύ 10āĻŽ āϤāϞāĻžā§ āĻĒā§āĻāĻāĻžāϤ⧠2 āĻŽāĻŋāύāĻŋāĻā§āϰ āĻŦā§āĻļāĻŋ āϏāĻŽā§ āύāĻŋāĻŦā§?
One day while going up in the elecator Emon finds that, if lift stops on any floor it stops for 10 seconds. It takes 5 seconds in total to open and close the elevator. To go one floor up, it takes 1.5 seconds. If Emon goes from floor 1 to floor 10 by elevator, at least how many stops will it take Emon to reach the 10th floor in more than 2 minutes.
2. āĻāĻāĻāĻŋ āϏā§āĻ đ¨ = {5, 6, 1, 6}, āĻ āĻĒāϰ āĻāĻāĻāĻŋ āϏā§āĻ đŠ = {đĨ| âđĨ â đ¨, 5 â đĨ5 â đ¨} āĻšāϞ, đ¨ āϏā§āĻā§āϰ āĻāĻĒāĻžāĻĻāĻžāύ āϏāĻāĻā§āϝāĻž āϝā§āĻāĻĢāϞ āĻāϤ āĻšāĻŦā§?
Given, đ¨ = {5, 6, 1, 6}, another set đŠ = {đĨ| âđĨ â đ¨, 5 â đĨ5 â đ¨}. What is the sum of elements of đŠ?
3. āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž 815āĻāĻŋ āĻŽāĻžāϰā§āĻŦā§āϞ āĻŦāĻžāĻā§āϏ⧠āĻāϰ⧠āϰāĻžāĻāĻāĻŋāϞāĨ¤ āϤāĻžāϰ āĻāĻžāĻā§ 10, 25, 50 āĻ āĻĨāĻŦāĻž 100 āĻŽāĻžāϰā§āĻŦā§āϞ āϧāĻžāϰāĻŖ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŽāύ āĻŦāĻžāĻā§āϏ āϰā§ā§āĻā§āĨ¤ āϝāĻĻāĻŋ āĻāĻĻāĻŋā§āύ āĻĒā§āϰāϤāĻŋ āϏāĻžāĻāĻā§ āϏāϰā§āĻŦā§āĻā§āĻ 5āĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŦāĻ āĻĒā§āϰāϤāĻŋāĻāĻŋ āĻŦāĻžāĻā§āϏ āϤāĻžāĻā§ āĻĒā§āϰā§āĻŖāĻāĻžāĻŦā§ āĻāϰāϤ⧠āĻšāĻŦā§, āϤāĻžāĻšāϞ⧠āĻāĻĻāĻŋā§āύ āϤāĻžāϰ āĻāĻžāĻā§ āĻĨāĻžāĻāĻž āĻŽāĻžāϰā§āĻŦā§āϞāĻā§āϞ⧠āϰāĻžāĻāĻžāϰ āĻāύā§āϝ āĻāĻŽāĻĒāĻā§āώ⧠āĻāϤāĻāĻŋ āĻŦāĻžāĻā§āϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻŦā§?
Adyan is packing marbles into boxes. He has boxes that can hold 10,25,50 or 100 marbles. If Adyan can use at most 5 boxes of each size and must fill each box with marbles he uses, what is the minimum number of boxes he requires to pack all the marbles to pack 815 marbles?
4. āĻ āύāĻŋāύā§āĻĻā§āϝ āĻāĻŦāĻ āĻĒā§āϞāĻžāĻŦāύ āĻĻā§āĻ āĻŦāύā§āϧ⧠āϏāĻāĻā§āϝāĻžāϤāϤā§āϤā§āĻŦ āύāĻŋā§ā§ āĻ āύā§āĻ āĻāĻā§āϰāĻšā§āĨ¤ āϤāĻžāϰāĻž āĻāĻāĻĻāĻŋāύ āĻāĻā§ā§ āĻāĻāĻāĻŋ āĻāϰ⧠āϧāύāĻžāϤā§āĻŽāĻ āĻĒā§āϰā§āĻŖāϏāĻāĻā§āϝāĻž āĻŦāĻžāĻāĻžāĻ āĻāϰāϞ⧠āĻāĻŦāĻ āϏā§āĻ āĻĻā§āĻāĻŋ āϏāĻāĻā§āϝāĻž āĻĻāĻŋā§ā§ āĻāĻāĻāĻŋ āĻā§ā§āĻž āĻŦāĻžāύāĻžāϞ⧠āĨ¤ āĻ āύāĻŋāύā§āĻĻā§āϝāϰ āĻŦāĻžāĻāĻžāĻ āĻāϰāĻž āϏāĻāĻā§āϝāĻžāĻāĻŋāϰ āĻāĻāĻāĻŋ āĻā§āύāύā§ā§āĻā§āϰ āϏāĻāĻā§āϝāĻž āϏāĻŦāĻā§ā§ā§ āĻŽā§āϞāĻŋāĻ āϏāĻāĻā§āϝāĻž āĻĻā§āĻŦāĻžāϰāĻž āύāĻŋāĻāĻļā§āώ⧠āĻŦāĻŋāĻāĻžāĻā§āϝ āύā§āĨ¤ āĻĒā§āϞāĻžāĻŦāύā§āϰ āĻŦāĻžāĻāĻžāĻ āϏāĻāĻā§āϝāĻžāϰ āϏāĻŽāώā§āĻāĻŋ āĻŽāĻžāύ 100āĨ¤ āĻāĻāϰāĻŽ āĻāĻāĻŋ āĻāĻŋāύā§āύ āĻāĻŋāύā§āύ āĻā§ā§āĻž āϤāĻžāϰāĻž āĻŦāĻžāύāĻžāϤ⧠āĻĒāĻžāϰāĻŦā§ āϤāĻžāϰ āϏāĻāĻā§āϝāĻž āύāĻŋāϰā§āĻŖā§ āĻāϰā§āĨ¤
Anindya and Plabon are very interested in number theory. One day they both chose a positive integer each and made a pair with them. The number of factors of the number that Anindya chose was not divisible by the smallest prime number. Plabon chose such a number which was a factor of the number that Anindya chose. The highest value of the number that they both chose was 100. Find the number of different pairs that they can make.
5. đ āĻāϰ āĻāĻāĻāĻŋ āĻŽāĻžāύ āĻĨā§āĻā§ 2^8 + 2^{11} + 2^n āĻāĻāĻāĻŋ āĻĒā§āϰā§āĻŖāĻŦāϰā§āĻ āϏāĻāĻā§āϝāĻž āĻšāϤ⧠āĻĒāĻžāϰ⧠āĻāĻŋāύāĻž, āϤāĻŦā§ đ āĻāϰ āĻŽāĻžāύ āĻā§ āĻšāĻŦā§?
If 2^8 + 2^{11} + 2^n is a perfect square number, then determine the value of đ where n is a natural number
6. āĻĒāĻžā§ā§āϞ āĻāĻāĻāĻŋ āϏāĻāĻā§āϝāĻž āϰā§āĻāĻžāϰ 0 āĻŦāĻŋāύā§āĻĻā§āϤ⧠āĻĻāĻžāĻā§āĻŋā§ā§ āĻāĻā§āĨ¤ āϏ⧠2 āĻāϰ āĻĄāĻžāύ⧠āĻŦāĻž āĻŦāĻžāĻŽā§ āϞāĻžāĻĢ āĻĻāĻŋāϤ⧠āĻĒāĻžāϰā§āĨ¤ āĻŽā§āĻ 2022āĻāĻŋ āϞāĻžāĻĢ āĻĻā§āĻā§āĻžāϰ āĻĒāϰ, āĻĒāĻžā§ā§āϞ āĻāϤāĻāĻŋ āĻāĻŋāύā§āύ āĻĒā§ā§āύā§āĻā§ āĻ āĻŦāϏā§āĻĨāĻžāύ āĻāϰāϤ⧠āĻĒāĻžāϰā§?

Payel is standing at point 0 on a number line. He can move a maximum of 2 steps right or left per jump. After 2022 consecutive jumps at how many different points on the number line can Payel be?
7. āĻāĻŋāϤā§āϰ⧠đ¨B||đŦF||đĒD, ÎđŠEC āĻāĻāĻāĻŋ āϏāĻŽāĻŦāĻžāĻšā§ āϤā§āϰāĻŋāĻā§āĻāĨ¤ đŦF, đĒM āĻāĻŦāĻ BN āĻšāϞ āϤā§āϰāĻŋāĻā§āĻā§āϰ āϤāĻŋāύāĻāĻŋ āĻŽāϧā§āϝāĻŽāĻžāĨ¤ āϝāĻĻāĻŋ, âBEC āĻāϰ āĻā§āώā§āϤā§āϰāĻĢāϞ 3â3 āĻšā§, āϤāĻžāĻšāϞ⧠đ¨M + đĩD =?

In the figure, đ¨B||đŦF||đĒD, ÎđŠEC is an equilateral triangle, đŦF, đĒM and đŠN are the three medians of the triangle. If the area of, ÎđŠEC is đâđ,then đ¨M + đĩD =?
8. āĻāĻāĻĻāĻŋāύ āĻ āύāĻŋāύā§āĻĻā§āϝ āĻĢā§āϝāĻžāĻā§āĻā§āϰāĻŋā§āĻžāϞ āύāĻŋā§ā§ āĻāĻŦā§āώāĻŖāĻž āĻāϰā§āĻāĻŋāϞā§āĨ¤ āĻ āύāĻŋāύā§āĻĻā§āϝ 10! āĻā§ āĻā§ā§āĻāĻāĻŋ āϏāĻāĻā§āϝāĻžāϰ āĻĢā§āϝāĻžāĻā§āĻā§āϰāĻŋā§āĻžāϞā§āϰ āϝā§āĻāĻĢāϞ āĻšāĻŋāϏā§āĻŦā§ āĻĒā§āϰāĻāĻžāĻļ āĻāϰāϤ⧠āĻāĻžāĻāϞ⧠āĻāĻ āĻļāϰā§āϤ⧠āϝ⧠āĻŦā§āϝāĻŦāĻšā§āϤ āĻĒā§āϰāϤāĻŋāĻāĻŋ āϏāĻāĻā§āϝāĻž 10 āĻāϰ āĻā§ā§ā§ āĻā§āĻ āĻšāĻŦā§āĨ¤ āĻāĻā§āώā§āϤā§āϰ⧠āĻāĻāĻ āϏāĻāĻā§āϝāĻžāϰ āĻĢā§āϝāĻžāĻā§āĻā§āϰāĻŋā§āĻžāϞ āĻāĻāĻžāϧāĻŋāĻ āĻŦāĻžāϰ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž āϝāĻžāĻŦā§ āĨ¤ 10! = a! + b! + c! = … + n!āĨ¤ āĻāĻāĻžāĻŦā§ āĻĒā§āϰāĻāĻžāĻļ āĻāϰāϞ⧠(a + b + c + … + n) āĻāϰ āĻŽāĻžāύ āύāĻŋāϰā§āĻŖā§ āĻāϰā§āĨ¤
One day Anindya was experimenting with factorials. Anindya wanted to express 10! as the sum of factorial of some numbers in such a way that each number used is less than 10. The factorial of the same number can be used more than once. If it is expressed in the following way: 10! = a! + b! + c! = … + n! then find the value of (a + b + c + … + n).

