One card is selected from a deck of cards. Find the probability of selecting a black card or a card less than 8.
I did it this way:
P(B or <8) = P(B) + P(<8) - P(B and <8)
= (13/52) + (28/52) - (7/52)
= 34/52
= 17/26
The homework key says it's 10/13?
What am I doing wrong?

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Is an ACE the highest card or the lowest card?

lowest

Thanks I will start working on this with you but I'm not the best with probabilities.

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