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

Can anyone tell me a word in the English dictionary which has a silent 'z'?

What does this Rebus Picture mean?

What do you see in the given picture?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

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?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Why is a river so rich ?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

What is the below Rebus indicate?