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Number System Practice Test 1
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Question : 6
Total: 40
A boy multiplies 987 by a certain number and obtains 559981 as his answer. If in the answer, both 9's are wrong, but the other digits are correct, then correct answer will be—
556581
555681
555181
553681
Validate
Solution:
👈: Video Solution
Here, 987 = 3 × 7 × 47
Hence, the required number must be divisible by each of 3, 7 and 47.
Here, (c) and (d) are not divisible by 3 and (a) is also not divisible by 7.
Hence, required answer is (b).
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