Can you solve the photo plexer logic ?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I have feet, but no legs. Which animal Am I?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Who can jump higher than a Mountain?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?