1.) The card is a diamond or a club
2.) The card is not a diamond
here the probability of the event A "the card is a diamond or a club" is 13/52+ 13/52= 26/52 =1/2
whereas the probability of the event B "the card is not a diamond" is PB = 1-13/52 = 39/52
so the probability P (A and B ) is:
P( A and B) = 1/2 * 39/52 = 39/104
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