A county park system rates its 19 golf courses in increasing order of difficulty as bronze, silver, or gold. There are only four gold courses and twice as many bronze as silver courses. Complete parts...

Extracted text: A county park system rates its 19 golf courses in increasing order of difficulty as bronze, silver, or gold. There are only four gold courses and twice as many bronze as silver courses. Complete parts (A) and (B) below. (A) If a golfer decides to play a round at a silver or gold course, how many selections are possible? There is/are possible selection(s). (Type a whole number.)