Search found 17 matches
great catch on the '3 x absolute value can't be neg. thing'
I was set to pick E, as I had also gotten -8 and 14 as my y values, and didn't believe that the first statement helped me eliminate either one as I could set up equations with both. Had I taken a closer look, I would have noticed that 3|x2 – 4| = y – 2 is only possible for +14 because 3|x2 – 4| MUST...
- by Edthesock
Tue Jan 20, 2009 6:28 pm- Forum: Data Sufficiency
- Topic: Need Help with Manhattan Gmat question
- Replies: 12
- Views: 1988
Factorials - Data Sufficiency problem
If x is a positive integer, is x! + (x + 1) a prime number? (1) x < 10 (2) x is even The only way I was able to solve this was to do every factorial up to 9 and see if any of them were prime/not prime after adding x+1. Obviously, this is inefficient and certainly not how it is to be solved... any he...
- by Edthesock
Tue Jan 20, 2009 5:15 pm- Forum: Problem Solving
- Topic: Factorials - Data Sufficiency problem
- Replies: 1
- Views: 1166