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Subjects
Class 11MathematicsPermutations and CombinationsFundamental principle of countingEasy
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How many (3)-digit numbers can be formed from digits (0,2,5,7) without repetition?

Answer and explanation

Correct answer: (18)

The hundreds place cannot be (0), so it has (3) choices. Then (3) and (2) choices remain, giving (3\times3\times2=18).

Related tags

Permutations And CombinationsCounting PrincipleDigitsFundamental Principle Of CountingMathematicsClass 11 Mcq
सुधार सुझाएँ / Earn

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