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06 Nov 2017, 00:31
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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
(A) -41
(B) -14
(C) 3
(D) 13
(E) 14
06 Nov 2017, 00:37
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The factors of 40 are 1,2,4,8, 5,40,10. Negative as well as postive
So 8+5 = 13 is a sum
-40-1=-41 is a sum
10+4= 14 is a sum
-10-4 = -14 is a sum
So answer is C
Sent from my iPhone using GMAT Club Forum
So 8+5 = 13 is a sum
-40-1=-41 is a sum
10+4= 14 is a sum
-10-4 = -14 is a sum
So answer is C
Sent from my iPhone using GMAT Club Forum
06 Nov 2017, 04:25
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The product of the two integers is \(40(2^3*5)\)
The various combination of integers can be 1*40,2*20,4*10,5*8.
Since we have a positive integer, it can be formed as a product
of two positive or negative integers.
The sum of these two integers could be -41,-22,-14,-13,13,14,22,41
Only Option C(3) CANNOT be sum of the two numbers!
The various combination of integers can be 1*40,2*20,4*10,5*8.
Since we have a positive integer, it can be formed as a product
of two positive or negative integers.
The sum of these two integers could be -41,-22,-14,-13,13,14,22,41
Only Option C(3) CANNOT be sum of the two numbers!
