Permutations in Probability
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There are 10 workers and 2 administrators in a company meeting room. Two people will be selected at random without replacement. The chance that the second person is a worker is:
a. none of these
b. 15/66
c. 5/6
d. 5/33
e. 10/11
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The expert examines permutations in probability.
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Here is my explanation:
The total combinations: 12P2 = 12 * 11 = ...
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