Free Practice Question
PS · Problem Solving
sub-505
Combinations
In a committee consisting of 12 members, how many unique combinations can be formed for the roles of a president, a treasurer, and a vice president?
Answer Choices
Correct answer marked belowA
720
B
840
C
960
D
1080
1320
Correct
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Explanation
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Official Explanation
Official
To find the number of ways to select a president, a treasurer, and a vice president from 12 members, we calculate it as…
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1
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E
ElleJun 18, 2024
Great question!
What this question tests
What it tests
Whether you can count arrangements and selections correctly — permutations vs. combinations.
Common trap
Overcounting: treating a selection as ordered when order does not matter, or forgetting to divide by duplicates.
Details
Difficulty
sub-505
Type
PS
Category