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ri2007: Master | Next Rank: 500 Posts; Posts: 258; Joined: Mon Aug 27, 2007 12:43 pm; Thanked: 15 times

by ri2007 » Thu Nov 08, 2007 4:26 pm

Is the integer P odd?
(1) The sum of P, P + 4, and P + 11 is even.
(2) The sum of P – 3, P, and P + 11 is odd.

Source: Beat The GMAT — Data Sufficiency | Thu Nov 08, 2007 4:26 pm

raulverde: Senior | Next Rank: 100 Posts; Posts: 91; Joined: Wed May 16, 2007 5:46 am; Thanked: 2 times

by raulverde » Thu Nov 08, 2007 5:01 pm

D

1.) 3P + 15 = even. So 3P has to be ODD. Hence P is ODD
2.) 3P + 8 = odd. So 3P has to be ODD. Hence P is ODD

ri2007: Master | Next Rank: 500 Posts; Posts: 258; Joined: Mon Aug 27, 2007 12:43 pm; Thanked: 15 times

by ri2007 » Thu Nov 08, 2007 6:05 pm

OA is D

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