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anksbhandari: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Wed Apr 30, 2008 11:05 am; Location: India

by anksbhandari » Sat Aug 02, 2008 8:56 am

If i and j are integers, is i + j an even integer?

1. i < 10
2. i = j

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Source: Beat The GMAT — Data Sufficiency | Sat Aug 02, 2008 8:56 am

bha: Senior | Next Rank: 100 Posts; Posts: 43; Joined: Tue Mar 18, 2008 5:59 pmFollowed by: 1 member; Thanked: 4 times

by bha » Sat Aug 02, 2008 9:28 am

IMO 'B'
1.i=10....no details for j...Not sufficient
2.i=j so i+j=2*i...which will always be even...sufficient..
What is the Original Answer?

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anksbhandari: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Wed Apr 30, 2008 11:05 am; Location: India

by anksbhandari » Sat Aug 02, 2008 11:10 am

OA is B,

But why i and j cannot equal to zero. because it is not mentioned that i and j are different integers .

therefore, i = j = 0,

then, B is also insufficient,

ans : e

please reply

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mlane25269: Master | Next Rank: 500 Posts; Posts: 151; Joined: Fri Jun 13, 2008 7:31 am; Thanked: 1 times

by mlane25269 » Sat Aug 02, 2008 11:14 am

If j = 0 and i = 0 and i + j = 0 then then B would still be the correct answer because 0 is an even integer. Does that make sense?

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anksbhandari: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Wed Apr 30, 2008 11:05 am; Location: India

by anksbhandari » Sat Aug 02, 2008 11:25 am

But dear, zero is neither positive nor negative integer.

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anksbhandari: Junior | Next Rank: 30 Posts; Posts: 26; Joined: Wed Apr 30, 2008 11:05 am; Location: India

by anksbhandari » Sat Aug 02, 2008 11:29 am

To confirm "zero is neither positive nor negative integer" kindly check OG 11th Edition, page no.108 , last paragraph: properties of integers.

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eccentric: Senior | Next Rank: 100 Posts; Posts: 88; Joined: Tue Jul 15, 2008 1:43 amFollowed by: 1 member; Thanked: 3 times; GMAT Score:590

by eccentric » Sat Aug 02, 2008 12:19 pm

Answer must be B
0 is an even integer....which is neither +ve nor -ve

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Stuart@KaplanGMAT: GMAT Instructor; Posts: 3225; Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members; Location: Toronto; Thanked: 1710 times; GMAT Score:800

by Stuart@KaplanGMAT » Sat Aug 02, 2008 12:23 pm

anksbhandari wrote:But dear, zero is neither positive nor negative integer.

You are 100% correct - however, that has nothing to do with this question!

0 is an even "uncharged" integer.

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

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