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Hi, the answer to this problem should be A. stat 1 : x+3 is prime-x can only be 2,4,6 etc. {x cannot be negative} this is always even hence whatever we multiple with it will be even note that if we were not given that x is a positive integer- then this would have been insufficient at x = -1. stat 2...
- by mahesh.aradhya
Thu Aug 18, 2011 9:33 am- Forum: Data Sufficiency
- Topic: DS: is the product of x and s even? Help
- Replies: 7
- Views: 1233
DS: is the product of x and s even? Help
If x and s are both positive integers, is the product of x and s even? (1) (x + 3) is a prime number. (2) (s + 1) is a prime number. A. Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not. B. Statement (2) BY ITSELF is sufficient to answer the question, b...
- by mahesh.aradhya
Thu Aug 18, 2011 7:43 am- Forum: Data Sufficiency
- Topic: DS: is the product of x and s even? Help
- Replies: 7
- Views: 1233
- by mahesh.aradhya
Tue Jul 26, 2011 6:34 am- Forum: GMAT Strategy
- Topic: Download GMAT questions with Expert solutions!
- Replies: 80
- Views: 106194
- by mahesh.aradhya
Wed Jun 29, 2011 7:10 am- Forum: I just Beat The GMAT!
- Topic: from 610 to 750!! What worked, what didn't + tools for you
- Replies: 54
- Views: 154095