- 20 of the 80 employees at a certain organization are doctors. If two
employees are to be selected at random, which of the following is closest
to the probability that neither employee selected is a doctor?
A 0.2
B 0.4
C 0.6
D 0.7
E 0.8 - A certain jar contains 21 marbles, 7 of which are red. If two marbles are
to be selected, with replacement, what is the probability that both marbles
will be red?
A (^19)
B (^16)
C (^13)
D (^23)
E (^34)
- How many three-letter arrangements can be selected from the letters
ABCDE?
A 15
B 20
C 60
D 120
E 240 - 10 people enter a competition in which the winner earns a gold medal, the
second-place finisher earns a silver medal, the third-place finisher earns a
bronze medal, and no other awards are given. In how many different ways
can the medals be awarded?
A 512
B 720
C 729
D 800
E 1,000
360 PART 4 ■ MATH REVIEW04-GRE-Test-2018_313-462.indd 360 12/05/17 12:04 pm