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

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

What is the word or phrase?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?