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Difficulty—
(1) z is positive.
(2) The product of w and x is positive
OA E
Source: GMAT Prep
On the number line above, is the product of w, x, y, and z negative?
(1) z is positive.
(2) The product of w and x is positive
OA E
Source: GMAT Prep
(1) z is positive.
(2) The product of w and x is positive
OA E
Source: GMAT Prep
