The probability that a card is drawn from a pack of 52 cards will form a pack of 52 cards will be diamond or king is ? By Editor No Comment Answer : B. 4/13
If the probability that A will live 15 year is 7/8 and that B will live 15 year is 9/10, then what is the probability that both will live after 15 year ? By Editor No Comment Answer : B. 63/80