Aset of cards has 20 cards with stars, 10 cards with squares, and 15 cards with circles. find the probability of each event when a card is chosen at random.
1. square
2. circle
3. star or circle
4. not circle or square
there are 14 girls and 18 boys in ms. wiley's class. ms. wiley randomly selects on student to solve a problem. find the probability of each event.
5. selecting a boy
6. selecting a girl

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.