Question 328959
a) The possible first number-second number combinations that lead to a sum of 7 are (2 5) (5 2) (3 4) (4 3). The probability of drawing a 3 first given the sum is 7 is 1/4.
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b) The possible first number-second number combinations that lead to a sum of 8 are (3 5) (5 3). The probability of drawing a 3 first given the sum is 8 is 1/2.