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Subjects
Class 11MathematicsPermutations and CombinationsCombinationsMedium
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From (13) objects (5) objects are to be selected and at most (1) of (4) special objects is chosen. How many ways are there?

Answer and explanation

Correct answer: (882)

Either (0) or (1) special object can be chosen. The total is (\binom{4}{0}\binom{9}{5}+\binom{4}{1}\binom{9}{4}=630).

Related tags

CombinationsClass11MediumPermutations And CombinationsMathematicsClass 11 Mcq
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