Find the one which does not belong to that group ?
Correct answer: B. 630
- A. 30
- B. 630
- C. 10
- D. 520
Explanation
630 is the only option divisible by 9 because its digit sum is 6 + 3 + 0 = 9, whereas the digit sums of 30, 10, and 520 are 3, 1, and 7. Thus 630 does not follow the common property. A student may choose 10 because it is the smallest number, which is irrelevant to divisibility.
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