Could someone check my answers for these questions:
62. Powerball is played with 55 white balls, numbered 1 through 55 and 42 red balls, numbered 1 through 42. Five white balls and one red ball are drawn. In how many ways can a player select the six numbers?
Answer: 141607962
64. A shipment of 25 television sets contains three defective units. In how many ways can a vending company purchase four of these units and receive (a) all good units, (b) two good units, and (c) at least two good units.
Answer:
(a) 7315
(b) 693
(c) 12628
68. A law office interviews paralegals for 10 openings. There are 13 paralegals with two years of experience and 20 paralegals with one year of experience. How many combinations of 7 paralegals with two years of experience and three paralegals with one year of experience are possible?
Answer: 1956240
1 answer
good job!