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?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Out of four images which one is the odd one out?

I am white when I am dirty, and black when I am clean. What am I?

Replace the question mark with the correct number in below Picture:

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

What is red and smells like blue paint?

Why Aeroplane windows are round?

It belongs to you, but other people use it more than you do. What is it?

I add 5 to 9 and get 2. The answer is correct, so what am I?