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Can the positive integer x be expressed as the product of [#permalink]
01 Feb 2008, 03:39
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Can the positive integer x be expressed as the product of two positive integers a and b where a is not equal to 1 and b is not equal to 1?
(1) 27< x < 33 (2) x is not a multiple of 7
I really hate the "can" questions because I can't really understand where my limit is. I chose D, but the OA is E. For example, it statement 1, I thought the question is asking whether X can be any other number that is not prime. since statement 1 gives us the range of numbers that includes numbers that are not prime, I looked at it as "yeah, its possible to have numbers that are not prime", so I accepted it because the question asked using the word "can" not "must", but I was wrong. I used the same logic with statement 2. how do you approach such "can" questions?