英文数学题求救,分数类的!A find the decimal expamsion for 1/43B show that 9 is a factor of the sum of the digits in the repetend of 1/7.1/39,1/43C suppose none of 2,3,5 is a factor of n.Explain why 9 is a factor of the sum ofthe digits in t
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英文数学题求救,分数类的!
A find the decimal expamsion for 1/43
B show that 9 is a factor of the sum of the digits in the repetend of 1/7.1/39,1/43
C suppose none of 2,3,5 is a factor of n.Explain why 9 is a factor of the sum ofthe digits in the repetend in the repetend of 1/n
D Find the fourth smallest value of n which neither 2 nor 5 is a factor and 9 is not a factor of the sum of the digits in the repetend of 1/n
求C 和
D:根据C的结论,n必须是3的幂,也就是3,9,27,81? 是81吗
英文数学题求救,分数类的!A find the decimal expamsion for 1/43B show that 9 is a factor of the sum of the digits in the repetend of 1/7.1/39,1/43C suppose none of 2,3,5 is a factor of n.Explain why 9 is a factor of the sum ofthe digits in t
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