SOLUTION: If x and 10 are relatively prime natural numbers, hen x could be a multiple of (A)9 (B) 18 (C)4 (D) 25 (E) 14

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: If x and 10 are relatively prime natural numbers, hen x could be a multiple of (A)9 (B) 18 (C)4 (D) 25 (E) 14       Log On


   

Question 208723: If x and 10 are relatively prime natural numbers, hen x could be a multiple of
(A)9 (B) 18 (C)4 (D) 25 (E) 14
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If x and 10 are relatively prime natural numbers, hen x could be a multiple of
(A)9 (B) 18 (C)4 (D) 25 (E) 14
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Relatively Prime means the numbers share no prime factors.
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10 has prime factors 2 and 5
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9 has neither of these
18 has the 2
4 has the 2
25 has the 5
14 has the 2
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Ans: 9
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Cheers,
Stan H.