You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What you cannot hold but it is yours?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.