If you say my name, I will no longer exist. What am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you find out which options fits best with the missing column?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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?

Which is faster, Heat or Cold ? Explain.