How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

What is the coolest letter in the alphabet?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Solve the equation in the image by looking at the pattern closely.

I know a nine-letter word having only one vowel.
Do you ?

The more it dries, the wetter it becomes. Can you tell what it is?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?