You are dealt a hand of three cards, one at a time.. Find the probabilities:
a. The first heart you get is the third heart dealt.
b. Your cards are all red
c. You get no spades.
d. You have at least one ace.
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it's the same logic as before, use the product of probabilities to obtain joint probability.
and for picking up at least one from 3 trials, use sum of probabilities.
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