Apirate's treasure chest is recovered. every crew member is promised one item from the chest chosen at random by the first mate. in the chest are 6 rubies, 27 diamonds, 2 sapphires, 12 strands of pearls, 42 silver coins, and 7 gold coins. what is the probability that billy, one of the crew members, will get a strand of pearls?

Afootball quarterback has two more chances to throw a touchdown before his team is forced to punt the ball. he misses the receiver on the first throw 25% of the time. when his first throw is incomplete, he misses the receiver on the second throw 15% of the time. what is the probability of not throwing the ball to a receiver on either throw?