Problem
finding the probability of selecting a black card or a 6 from a deck of 52 cards.
1. We need to find out P(B or 6)
2. Probability of selecting a black card = 26/52
3. Probability of selecting a 6 = 4/52
4. Probability of selecting both a black card and a 6 = 2/52
5. P(B or 6) = P(B) + P(6) – P(B and 6)
6. = 26/52 + 4/52 – 2/52
7. = 28/52
8. = 7/13