Why Aeroplane windows are round?

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

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

I am an odd number. Take away a letter and I become even. What number am I?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

Why 1729 is a magic number? Answer Logically.