Math 1342
TEST # 2 (Review)
NAME: ___________________________________
1) How many four

digit ID tags can be made if the first digit can't
be 0 or 9 and repetition are not allowed.
A) 1680
B) 672
C) 1008
D) 2520
E) 4032
2) How many different signals can be made by using at at most 2 distinct flags if there are five flags to choose from ?
3) There are 12 boys and 10 girls in a class.. How many way can a group of 5 consist of 3 boys and 2 girls be selected ?
4) For above problem(#3),
How many ways can a group of 5 consist of at least 4 boys be selected ?
Find the indicated probability.
5) In one town,
43% of all voters are Democrats. If five voters are randomly selected for a survey, find the probability that
they are not Democrats.
A) 0.0602
B) 0.0147
C) 0.9853
D) 0.0127
E) 0.9398
6) The probability a laptop has "Intel chip" is .67. The probability a laptop has "Blue

Ray" is .45. If probability that a laptop
has both is .35, find probability that a randomly selected laptop has neither "Intel chip" nor a "blue

Ray"?
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 Spring '11
 Staff
 Math, Normal Distribution, Probability, Intel

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