Why Aeroplane windows are round?

What kind of tree can you carry in your hand?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

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

I have branches, but no fruit, trunk or leaves. What am I?

Which alphabet letter is a question?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?