Which number should replace the question mark?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

Can you count the number of matches in the picture below ?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

How many times in a given day, minutes and hour clock comes in a straight line ?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Aman has 1.15 rupees in his pocket. There are a total of 6 coins in his pocket.

When his friend asked him for a change, he could not give change for a rupee and five paisa.

Can you tell which coins he has?

Can you count the number of lines in the below picture?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?