Here are the two puzzles that I have heard a long ago from my friends.
1) You can touch it with your right hand, but not with your left hand. What is it?
2) 10x+4x = 2y Then, what is x and y?
HINT: (x and y are not numbers)
I think both the puzzles are easy for you.
+1 if only one correct answer. +1 and will mark as accepted answer if both answers are correct.