There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

what's the probability of getting a king or a queen from a pack of 52 cards?

What is the word or phrase?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

What is the next number in this matchsticks series riddle?

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

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