By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What am I?

What English word has three consecutive double letters?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

I have an eye but still cannot see.

Who am I?

Which famous Hollywood movie name is hidden in the below rebus?