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11×13×17×19×23A decrease of 1 in which of the factors above would result in the
11×13×17×19×23A decrease of 1 in which of the factors above would result in the
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2024-01-12
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问题
11×13×17×19×23
A decrease of 1 in which of the factors above would result in the greatest decrease in the product?
选项
A、11
B、13
C、17
D、19
E、23
答案
A
解析
上式中哪一个因子(factor)的值减小1将导致该式的乘积减少最大?
解:本题的正确答案为(A)。设n为上式中的任一个因子,则当n减少1时,其乘积将减少1/n,所以n越小时减少的越多。
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