Which alphabet letter is a question?

Prove that the below maths equation is true.

8 + 8 = 91

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

What has a ring but no finger?

Can you solve the below geography rebus by decoding the below rebus ?

Solve the puzzle by telling what does below picture means.

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

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?