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Q.1. How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that
(i) repetition of the digits is allowed?
Answers (1)
The five digits are 1, 2, 3, 4 and 5
As we know that repetition of the digits is allowed,
so , unit place can be filled by any of five digits.
Similarly , tens and hundreds digits can also be filled by any of five digits.
Number of 3-digit numbers can be formed
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