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Subjects
Class 11MathematicsPermutations and CombinationsPermutationsMedium
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How many (4)-digit odd numbers can be formed from (0,1,3,5,7,9) without repetition?

Answer and explanation

Correct answer: (500)

There are (5) odd choices for the unit place, but the first digit must not be (0). The total is (5\cdot4\cdot4\cdot3=240).

Related tags

PermutationsOdd NumbersZero RestrictionPermutations And CombinationsMathematicsClass 11 Mcq
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