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The positive integer divisors of 175, except 1, are arranged around a circle so that every pair of adjacent integers has a common factor greater than 1. What is the sum of the two integers adjacent to 7?

 May 29, 2020
 #1
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Here are all positive divisors of 175. You decide what the answer is !

 

(1, 5, 7, 25, 35, 175) >>Total = 6

 May 29, 2020
 #2
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Given the factors shown in the previous answer, 7 has no common factors other than itself, therefore you will have to locate the 7 between the only other two factors that have 7 as a factor (i.e., are divisible by 7). 

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 May 29, 2020

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