Replace the question mark with the correct number in below Picture:

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

You need to move three matchsticks to form three squares. Can you do it?

Find the next number in the sequence

5 12 24 36 ?

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?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Replace the question mark with the correct number below.