A boy multiplied 987 by a certain number and obtained 559981 as his answer If in the answer both 98 ...........

Quantitative Aptitude ( CCS) Number System

A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 98 are wrong and the other digits are correct , then the correct answer would be :

553681

554681

558681

555681

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Explanation:

987 = 3 * 7 * 47.
So, the required number must be divisible by each one of 3, 7, 47
553681 => (Sum of digits = 28, not divisible by 3)
555181 => (Sum of digits = 25, not divisible by 3)
555681 is divisible by each one of 3, 7, 47.

Hence, option 4 is the correct answer.