Asked by Friend123456789

Find all 3-digit numbers that have the sum of the digits 7, and where each digit is smaller than the one on the left of it.
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Real Desperate for answer. I'll miss Halloween if i don't get this done.

Answers

Answered by Reiny
just list them systematically:
start with the smallest unit digit ...

610
520
430
421

Do I have them all?
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