A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

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

What word begins and ends with an E, but has only one letter?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

Can you count the number of triangles in the picture below?