It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A blonde put eyeliner on her head. Why?

People make me, save me, change me, raise me. What am I?

What does a man do only once in his lifetime, but women do once a year after they are 29?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

Find the number of squares in the below-given picture.