JEE MATHEMATICS MCQ: PERMUTATIONS

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The number of five digit numbers that can be formed by using digits 1, 2, 3 only, such that three digits of the formed number are identical, is

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Correct option: C

120

The correct answer is C (120) because it accounts for the cases where exactly three digits are identical and the remaining two are different, and where three digits are identical and the remaining two are also identical.

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