SOLUTION: there are 52 cards in a deck: a.P(3 and black card) b.P(3 or black card)

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Question 145046: there are 52 cards in a deck:
a.P(3 and black card)
b.P(3 or black card)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
there are 52 cards in a deck:
a.P(3 and black card) = 2/52
b.P(3 or black= P(3) + P(black) - P(3 and black)
= 4/52 + 26/52 - (2/52)
= 28/52
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Cheers,
Stan H.