Which flower has two lips?

How many letters are in the alphabet?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

In the four images below, can you find the odd one out?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

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?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

What is red and smells like blue paint?

Why Aeroplane windows are round?