Discussion
An integer greater than 1 is prime if it is divisible only by itself and 1. Is n prime?
(1) n is between 1 and 4.
(2) n2 − 5n + 6 = 0
| (A) | if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient; |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 02/25/2012 10:36
When a question states that a number is between a set of numbers, like 1 and 4 in this case, should one always assume that's it doesn't include the first and last number? i.e. 1 and 4? I got this one wrong because I assumed n could be 4, which isn't prime.
Posted: 02/25/2012 13:47
Justin, "between" does not include the border values.