Answer :
so assuming that there are 2 choices per cup: not defective, and defective
1/2 for 1st cup
1/2 for second
but with both , multiply
1/2 times 1/2=1/4
te answer is 1/4
1/2 for 1st cup
1/2 for second
but with both , multiply
1/2 times 1/2=1/4
te answer is 1/4