Asked in PPSC, FPSC and other one-paper exams (compiled from unofficial resources).
Statistics & ProbabilityPermutations & Combinations
In how many ways can a President, Vice President, and Water-boy be selected from a group of 10 people?
- A.$^{10}P_3$Correct answer
- B.$^{10}C_3$
- C.$10^3$
- D.$3^{10}$
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Practice these MCQs in the appQuick fact: The number of ways is $^{10}P_3$, because the three positions are distinct (order matters), so we use permutations.