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# ds - set p

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VP
Joined: 30 Sep 2004
Posts: 1490
Location: Germany
Followers: 4

Kudos [?]: 91 [0], given: 0

ds - set p [#permalink]  06 Nov 2005, 09:33
00:00

Difficulty:

(N/A)

Question Stats:

100% (01:08) correct 0% (00:00) wrong based on 1 sessions
If P is a set of consecutive integers, is there an even number of integers in set P?
(1) The sum of the integers in set P is 0
(2) The product of the integers in set P is 0
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VP
Joined: 22 Aug 2005
Posts: 1123
Location: CA
Followers: 1

Kudos [?]: 43 [0], given: 0

A.

(1) sum will be 0 when:
-n, -n+1,....-2,-1,0,1,2,....,n-1,n
the number of integers to the left and right of 0 should be same. therefore, total number of integers = odd
sufficient

(2) product will be 0 as long as 0 is in the set
0,1
0,1,2
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