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Subjects
Class 11MathematicsPermutations and CombinationsPermutationsEasy
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How many (2)-digit numbers can be formed from digits (1,2,4,5) without repetition?

Answer and explanation

Correct answer: (12)

There are (4) choices for tens and (3) for units, so (4\times3=12). Changing places changes the number.

Related tags

PermutationsClass11EasyPermutations And CombinationsMathematicsClass 11 Mcq
सुधार सुझाएँ / Earn

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