a) The two events are not mutually exclusive.
Two events are called mutually exclusive events when those two events cannot occur at the same time. Here, it is possible that both first card and second card are hearts. So, the events are not mutually exclusive.
b) Number of hearts = 13
Number of cards = 52
P(A) = 13/52
P(B) = 13/52
P(B | A) = 12/52
If two events A and B are independent, P(B) = P(B | A)
Here, P(B) P(B | A)
Therefore, the events are not independent
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