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Three digit numbers from the digits 1 to 5, with repetition allowed, number:
A100
B150
C125
D60
Answer & Solution
Correct answer: C. 125
1. Each of the 3 places has 5 choices.
2. That is 5 times 5 times 5.
3. The count is 125.
_Source: NCERT Class 11 Mathematics, Chapter 7, Permutations and Combinations._
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