A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

If a wheel has 54 spokes, how many spaces are there between the spokes?

How many times can you subtract the number 5 from 25?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

If 1+9+8=1, what is 2+8+9?

How can you leave a room with two legs and return with six legs?

What does this mathematical rebus means ?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.