When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

If 1+9+8=1, what is 2+8+9?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

What does below Rebus say?

XLR8

What English word has three consecutive double letters?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Identify the 10 differences between the two given pictures.

Can you find the thief by just looking at the picture below?

Why do you find that most of the buildings are deprived of the 13th floor?