What is the smallest number greater than 1000 that when divided by any one of the numbers 6, 9, 12, 15, 18 leaves a remainder of 3?
- A1063
- B1073
- C1083Correct
- D1183
Explanation
To find the smallest number greater than 1000 that leaves a remainder of 3 when divided by 6, 9, 12, 15, 18, we first need to find the Least Common Multiple (LCM) of these divisors.
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Find the LCM of 6, 9, 12, 15, 18: Prime factorization: 6 = 2 x 3 9 = 3^2 12 = 2^2 x 3 15 = 3 x 5 18 = 2 x 3^2 LCM = 2^2 x 3^2 x 5 = 4 x 9 x 5 = 180.
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The numbers that leave a remainder of 3 when divided by 6, 9, 12, 15, 18 are of the form (LCM * k) + 3, where k is a positive integer. So, the numbers are of the form 180k + 3.
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We need the smallest such number that is greater than 1000. Set 180k + 3 > 1000 180k > 997 k > 997 / 180 k > 5.53...
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Since k must be an integer, the smallest integer value for k that satisfies this condition is k = 6.
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Substitute k = 6 into the expression: Number = (180 * 6) + 3 Number = 1080 + 3 Number = 1083.
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Checking the options: A) 1063: (1063 - 3) = 1060. 1060 is not divisible by 180. B) 1073: (1073 - 3) = 1070. 1070 is not divisible by 180. C) 1083: (1083 - 3) = 1080. 1080 is divisible by 180 (1080 / 180 = 6). This fits the pattern and is the smallest number greater than 1000. D) 1183: (1183 - 3) = 1180. 1180 is not divisible by 180.
Therefore, 1083 is the smallest number greater than 1000 that satisfies the given condition.
The final answer is C

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