I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

In the four images below, can you find the odd one out?

Can you tell a 3D object that has just two surfaces?

how come the second man dies?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

What is both possible and impossible at the same time?

What has one letter and starts with an E?