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Divisibility rules formulas
11 formulas for Divisibility rules, from the Arithmetic & Quantitative Aptitude section of the Quantix formula library. Tap 🧮 next to a formula to solve it for any variable with step-by-step working.
| Name | Formula | Note |
|---|---|---|
| By 2 | last digit even | |
| By 3 | sum of digits divisible by 3 | |
| By 4 | last two digits divisible by 4 | |
| By 5 | last digit 0 or 5 | |
| By 6 | divisible by 2 and 3 | |
| By 7 | double the last digit, subtract from the rest; result divisible by 7 | |
| By 8 | last three digits divisible by 8 | |
| By 9 | sum of digits divisible by 9 | |
| By 11 | (sum of odd-place digits) − (sum of even-place digits) = 0 or multiple of 11 | |
| By 12 | divisible by 3 and 4 | |
| By 25 | last two digits 00, 25, 50 or 75 |
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