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25 Jul 2018, 21:57
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The variables a, b, and c are distinct factors of 24. Which of the following must be true?
A. a + b + c is even.
B. a + b + c < 40
C. (a – b)/c is an integer.
D. abc is even.
E. abc is a multiple of 24
A. a + b + c is even.
B. a + b + c < 40
C. (a – b)/c is an integer.
D. abc is even.
E. abc is a multiple of 24
Updated on: 25 Jul 2018, 22:07
Originally posted by StudiosTom on 25 Jul 2018, 22:01.
Last edited by StudiosTom on 25 Jul 2018, 22:07, edited 1 time in total.
Last edited by StudiosTom on 25 Jul 2018, 22:07, edited 1 time in total.
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Bunuel
The variables a, b, and c are distinct factors of 24. Which of the following must be true?
A. a + b + c is even.
B. a + b + c < 40
C. (a – b)/c is an integer.
D. abc is even.
E. abc is a multiple of 24
A. a + b + c is even.
B. a + b + c < 40
C. (a – b)/c is an integer.
D. abc is even.
E. abc is a multiple of 24
So take 2,3,4 and 24,12,8 or any combination which can includes 1 and 6 cases as well
A.Substitute,a+b+c=9,not even ,false
B.24+12+8>40,false case.So not necessarily true
C.(4-3)/2=0.5 ,false
D.2*3*4=24 ,true
Also 24*12*8=even,true
E.1*2*3=6,not a multiple of 24,not necessarily true
Answer:D
25 Jul 2018, 22:05
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D
Distinct factors of 24 are 1,2,3,4,6,8,12,24
Only 1 and 3 are odd numbers.
Out of a, b, and c, one of the factors has to be even. So, abc will always be even.
Sent from my ONEPLUS A3003 using GMAT Club Forum mobile app
Distinct factors of 24 are 1,2,3,4,6,8,12,24
Only 1 and 3 are odd numbers.
Out of a, b, and c, one of the factors has to be even. So, abc will always be even.
Sent from my ONEPLUS A3003 using GMAT Club Forum mobile app
