Probability that the first card is not a club is 1 minus probability that it is a club. i.e. 1 - 1/4 = 3/4
Probability that the second card is a diamond = 1/4
Probability that the first card is not a club AND the second card is a diamond is 3/4 x 1/4 = 3/16
139 is suppose to be 140 and 18 is suppose to be 20, 140 x 20 = 2800
Home this works
The answer is 6.6 or if you wanted it rounded 7 hope that helped have a good day and always good luck