Victory for the ACT Student Text 15e

252 • M ATH

PROBABILITY

If a jar contains r marbles, and g green marbles, which of –Š‡ ˆ‘ŽŽ‘™‹‰ ‡š’”‡••‡• –Š‡ ’”‘„ƒ„‹Ž‹–› that a marble drawn at random will NOT be red? F. r b g r + + − G. r b g r H. b g r b g r + + + − Š‡ ϐ‹‰—”‡ „‡Ž‘™ •Š‘™• ƒ †ƒ”–„‘ƒ”† consisting of two concentric circles with center O . The radius of the larger circle is equal to the diameter of the smaller circle. What is the probability that a randomly thrown dart striking the board will score a 3? red marbles, b blue J. K. b g r b g r b g

16. If A set {1, 2, 3, 4, 5, 6} and B set {1, 2, 3, 4, 5, 6}, what is the probability that the sum of one number from set A and one number from set B will total 7? F. 12 1 G. 36 5 H. 6 1 J. 5 1 K. 3 1 17. If a book is selected at random from the collection shown below, which of the following has the greatest probability of being selected? A. A book by Mary Smith Ǥ –‡š–„‘‘ C. A mystery D. A book written by either Carol Kim or Victor Brown E. A biography

18.

Throwback to Math Class Probability # of possible outcomes # of desired outcomes

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A. B. C. D. E.

1

16

1

8

1

4

1

2

3

4