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Divisibility by 3
publish date: 2026/05/11 11:32:52.887153 UTC
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Is \(534{,}840\) divisible by 3?
Hint: Add its digits: \(5+3+4+8+4+0\)
Correct Answer
Yes — the digit sum is 24, which is divisible by 3.
Explanation
A number is divisible by 3 if the sum of its digits is divisible by 3. \(5+3+4+8+4+0=24\) and \(24 \div 3 = 8\) with remainder 0. ✓
Reference
Mathematics for college students