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Choose the number which is completely divisible by 9.

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7021

1161

9101

5198

answer is B.

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Detailed Solution

If the sum of the digits of a number is divisible by 9, then the number itself is divisible by 9. Here,

7021 = 7 + 0 + 2 + 1 = 10; 10 is not divisible by 9, so 7021 is also not divisible by 9.

1161 = 1 + 1 + 6 + 1 = 9; 9 is divisible by 9, so 1161 is also divisible by 9.

9101 = 9 + 1 + 0 + 1 = 11; 11 is not divisible by 9, so 9101 is also not divisible by 9.

5198 = 5 + 1 + 9 + 8 = 23; 23 is not divisible by 9, so 5198 is also not divisible by 9.

Hence 1161 is the correct alternative.

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