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