GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 13 Oct 2019, 23:40

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# If the sum of three positive integers even? (1) The sum of the first

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58335
If the sum of three positive integers even? (1) The sum of the first  [#permalink]

### Show Tags

26 Sep 2018, 05:30
1
00:00

Difficulty:

45% (medium)

Question Stats:

67% (01:23) correct 33% (01:11) wrong based on 48 sessions

### HideShow timer Statistics

If the sum of three positive integers even?

(1) The sum of the first and the second integer is even.

(2) The sum of the second and the third integer is eve

_________________
examPAL Representative
Joined: 07 Dec 2017
Posts: 1129
Re: If the sum of three positive integers even? (1) The sum of the first  [#permalink]

### Show Tags

26 Sep 2018, 13:45
1
Bunuel wrote:
If the sum of three positive integers even?

(1) The sum of the first and the second integer is even.

(2) The sum of the second and the third integer is eve

Questions dealing with even/odd properties can often be solved logically, without explicit calculations.
We'll look for such an answer, a Logical approach.

(1) Without knowledge of the third integer, this is clearly insufficient.
Insufficient.

(2) Similarly to the above, no info on the first integer.
Insufficient.

Combined: From (1) we know that the first and second integers are both even or both odd and from (2) we know that the second and third are both even or both odd.
So, all 3 integers are either even or odd. If they are all even, their sum is even and if they are all odd, their sum is odd.
Insufficient.

(E) is our answer.
_________________
Re: If the sum of three positive integers even? (1) The sum of the first   [#permalink] 26 Sep 2018, 13:45
Display posts from previous: Sort by

# If the sum of three positive integers even? (1) The sum of the first

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne