Mathematics
Write all possible 3-digit numbers using the digits 3, 1 and 5. Repetition of digits is not allowed.
Number System
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Answer
We are required to write 3-digit numbers using the digits 3, 1 and 5, where repetition of digits is not allowed.
Keeping 1 at unit's place, 3-digit numbers are 351 and 531.
Keeping 3 at unit's place, 3-digit numbers are 153 and 513.
Keeping 5 at unit's place, 3-digit numbers are 135 and 315.
Hence, all possible 3-digit numbers are 135, 153, 315, 351, 513 and 531.
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