Question
A boy multiplied 987 by a certain number and obtained 559981 as his answer. If in the answer both 9s are wrong and the other digits are correct. then answer would be:
Answer: Option C
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987 = 3 x 7 x 47
so, the required number must be divisible by each on 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
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