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# Is a sum of three integers A, B, and C even?

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Math Expert
Joined: 02 Sep 2009
Posts: 58340
Is a sum of three integers A, B, and C even?  [#permalink]

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10 Dec 2018, 03:48
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Difficulty:

55% (hard)

Question Stats:

57% (01:14) correct 43% (01:02) wrong based on 56 sessions

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Is a sum of three integers A, B, and C even?

(1) A + B = A
(2) B + C = A

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Joined: 27 Oct 2017
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Location: India
GPA: 3.64
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Is a sum of three integers A, B, and C even?  [#permalink]

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10 Dec 2018, 03:58
1) A+B = A

this gives, B = 0

No other info. Insufficient

2) B+C =A

hence A+B+C = A+(B+C)= A+A= 2A, hence even.

Sufficient.

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Intern
Joined: 21 Oct 2018
Posts: 31
Location: India
Re: Is a sum of three integers A, B, and C even?  [#permalink]

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17 Dec 2018, 11:31
kind of tricky question , if you look carefully , you can answer in less than a minute

1.a+b=a, --> a+b+c=a+c

and we are not sure what are the values of a and c

so, clearly not sufficient

2. b+c=a--> a+b+c =a+a-->2 *a

which is always even.

Re: Is a sum of three integers A, B, and C even?   [#permalink] 17 Dec 2018, 11:31
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