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Divisible by Both 3 and 5?
publish date: 2026/05/11 11:32:55.837860 UTC
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Select all numbers that are divisible by both 3 and 5.
Correct Answer
(1) 45
(2) 75
(3) 135
Explanation
- 45: digit sum 9 → div by 3 ✓; ends in 5 → div by 5 ✓
- 75: digit sum 12 → div by 3 ✓; ends in 5 → div by 5 ✓
- 82: digit sum 10 → not div by 3 ✗
- 135: digit sum 9 → div by 3 ✓; ends in 5 → div by 5 ✓
Reference
go-math-science.com