A hat contains a slips of paper labeled with the number 1, and b slips labeled with the number 2. Two slips are drawn at random without replacement. Let X be the number on the first slip drawn and Y...

A hat contains a slips of paper labeled with the number 1, and b slips labeled with the number 2. Two slips are drawn at random without replacement. Let X be the number on the first slip drawn and Y the number on the second. Show that

(a) X and Y are identically distributed.