Easy Riddles

When is 1500 plus 20 and 1600 minus 40 the same thing?

When is a door not a door?

When it’s dirty this should never be aired in public.

When someone uses this acronym, you know you’ve got to pick up the pace

When this is found in a road you are forced to make a decision.

When will water stop running down hill?

Where can you add 2 to 11 and get 1?

Where can you find roads without cars, forests without trees and cities without houses?

Where humans breathe liquid.

Where is the ocean deepest?

Where jewelry pierces your head.

Where on earth do the ways always blow from the south?

Which is the oldest tree?

Which one of Santa’s reindeer can be seen on Valentines day?