Write all possible 3-digits numbers using the digits 3, 1 and 5. R | Filo
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Class 11

Math

Algebra

Permutations and Combinations

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Write all possible 3-digits numbers using the digits and Repetition of digits is not allowed.

Solution: We are required to write 3-digit numbers using the digits and the repetition of the digits is not allowed.
Keeping 1 at unit's place, 3-digit number obtained are and
Keeping 3 at unit's place, 3-digit number obtained are and
Keeping 5 at unit's place, 3-digit number obtained are and
Hence, all possible 3-digit numbers are:
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