The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

What can you serve, but never eat?

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK

Count the squares in the matchstick puzzle below?

Prove that the below maths equation is true.

8 + 8 = 91

Remove two matchsticks to make the below equation correct.

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

What can go up a chimney down, but can’t go down a chimney up?

Complete the table series riddle by finding the number that can replace "??".