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Class 11MathematicsPermutations and CombinationsPermutationsExpert
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In a row of (10) people, how many arrangements have (A) between (B) and (C), and (D) before (E)?

Answer and explanation

Correct answer: (604800)

Among the relative orders of (A,B,C), (A) is in the middle with probability (1/3), and (D) before (E) has probability (1/2). Hence the count is (10!/6).

Related tags

PermutationsRelative OrderSeatingPermutations And CombinationsMathematicsClass 11 Mcq
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