Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

Can you name some countries which do not have the alphabet 'A' in them?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

What do you answer even though it never asks you questions?

Why are televisions attracted to people?

I have feet, but no legs. Which animal Am I?