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Using the digits 0, 1, 2, 3, 4, and 5, with repetition allowed, how many 3-digit numbers less than 300 can be formed?

Answer and explanation

Correct answer: 72 numbers

The hundreds digit must be 1 or 2 for the number to be 3-digit and less than 300, giving 2 choices. Each of the other two places has 6 choices because repetition is allowed. Thus, 2 × 6 × 6 = 72.

Related tags

Permutations And CombinationsFundamental Principle Of CountingMathematicsClass 11 Mcq

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