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# The product of two integers is 40. Which of the following CA

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Senior Manager
Joined: 20 May 2014
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The product of two integers is 40. Which of the following CA [#permalink]  05 Nov 2017, 23:30
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The product of two integers is 40. Which of the following CANNOT be the sum of these two integers?

(A) -41

(B) -14

(C) 3

(D) 13

(E) 14

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[Reveal] Spoiler: OA
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Joined: 03 Sep 2017
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Re: The product of two integers is 40. Which of the following CA [#permalink]  06 Nov 2017, 06:05
The couples of integer whose product is 40 are 1*40, 2*20, 4*10, 5*8 and the couples of the same but negative numbers -1*-40, -2*-20, -4*-10, -5*-8.

Then, we just have to exclude the choices which are right, i.e. -40-1 = -41; -10-4 =-14, 8+5 = 13, 10+4 = 14. The only sum that cannot be computed using couples of integers whose product is 40 is 3.

Re: The product of two integers is 40. Which of the following CA   [#permalink] 06 Nov 2017, 06:05
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