On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Find the value of "?" in the ball picture Riddle below:

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

What number divided by 4 is the same as that number minus 4?

Can you solve below mathematical equation?

2^1234 - 2^1233

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?