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(1) not sufficient. P and Q could be fractions, and the operation of x could result in some fraction as well.
(2) not sufficient. Same reason as above.

(1) and (2) put together doesn't tell us anything more than we already know.

nope, E. Definately. The best we can get to is combining them together and seeing that x = p = q. But since we don't know what they are, just that their not zero, it's got to be E.

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The answer is straight E, without any algebra or number plugging.

If pq ≠ 0, is x an integer?

(1) x = 3p – 2q. So, we have that x is equal to some number (3p - 2q). We know nothing about p and q (other than neither of them is 0), hence we cannot determine whether it's an integer. Not sufficient.

(2) p = q. Clearly insufficient.

(1)+(2) x = 3p – 2q = 3p - 2p = p. And again we have that x is equal to some number p, which we know nothing about. Not sufficient.

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So, my final tally is in. I applied to three b schools in total this season: INSEAD – admitted MIT Sloan – admitted Wharton – waitlisted and dinged No...

HBS alum talks about effective altruism and founding and ultimately closing MBAs Across America at TED: Casey Gerald speaks at TED2016 – Dream, February 15-19, 2016, Vancouver Convention Center...