# GMAT 考满分题库

If $defines a certain operation, is p$ q less than 20?

(1) $x  y = 2x^2 - y$ for all values of x and y

(2) p = 4, q = 10
• AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
• BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
• CBoth statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
• DEACH statement ALONE is sufficient.
• EStatements (1) and (2) TOGETHER are NOT sufficient.

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