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From (9) distinct students, (5) are to stand in a row. One particular student must be included and must not stand at either end. How many ways are possible?

Answer and explanation

Correct answer: (6720)

The particular student has (3) inner positions, and the remaining (4) places are filled from (8) students in (^{8}P_4) ways. The total is (3\cdot1680=5040).

Related tags

PermutationsStanding OrderPosition RestrictionPermutations And CombinationsMathematicsClass 11 Mcq

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