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Question

A number lying between 1000 and 2000 is such that on division by 2,3,4,5,6,7 and 8 leaves remainders 1,2,3,4,5,6 and 7, respectively. What is the number?

A
1679
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B
1579
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C
1779
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D
1879
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Solution

The correct option is A 1679
The difference between the divisors and the corresponding remainders is 1
(21=32=43=54=65=76=87=1)
LCM of 2,3,4,5,6,7 and 8=2×2×3×5×7×2=840
Required number =840K1
Since the number lies between 1000 and 2000, K=2.
The number =840×21=1679

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