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Subjects
Class 11MathematicsPermutations and CombinationsPermutationsExpert
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From (10) distinct flags, (4) flags are to be placed on a straight string. How many arrangements have one particular flag always at the leftmost position?

Answer and explanation

Correct answer: (504)

The particular flag is fixed at the first position, and the remaining (3) places are filled in (9P3) ways. Lock the fixed position first.

Related tags

PermutationsClass11ExpertFixed PositionPermutations And CombinationsMathematicsClass 11 Mcq
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