Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Solve the rebus riddle in the picture below.

Can you divide the below-given shape into four equal and identical pieces?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Replace the question mark with the correct number in below Picture:

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

To tease, King Akbar told his most clever advisor Birbal to give his daughter one thing that she can eat when hungry, drink if she feels thirsty and can burn if she feels cold. King Akbar was shocked when Birbal gave Akbar's daughter one such thing that satisfies all of the above.

What did Birbal give to Akbar's daughter?