Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

How many times can you subtract the number 5 from 25?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

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?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

The centre of the third figure is empty. What digit should fit inside?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?