Last Week's Brain Teaser was:

How could the 22nd and 24th U.S. Presidents have the same parents, but weren’t brothers? POTUS (President of the United States) 22 and POTUS 24 were the same man: Grover Cleveland-the only President of the United States to serve two separate terms as President.

 

This Week's Brain Teaser is:
 

Mr. Tamm has 20 hats. He has 3 red hats.  He has 1 less yellow hat than red hat. He has 1 more blue hat than red hat.
To find the number of green hats, add the number of yellow hats to the number of blue hats. The rest of his hats are orange.

How many hats are red?
How many hats are yellow?
How many hats are green?
How many hats are blue?
How many hats are orange?