Kids Riddles

Question: 7 months have 31 days. How many months have 28 days?

Question: I'm measured in temperature and time, but have neither.

What am I?

Question:

You have a large number of friends coming over and they all get thirsty. Your first friend asks for 1/2 a cup of water. Your second friend asks for 1/4 a cup of water. Your third friend asks for 1/8 a cup of water, etc.

How many cups of water do you need to serve your friends?

Question: There are several different kinds, but the one you pick doesn't do its job.

What is it?

Question: It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?