GMAT 考满分题库

For all integers x and y, the operation $$\Delta $$ is defined by $${x}\Delta{y}=({x}+{2})^{2}+({y}+{3})^{2}$$. What is the value of integer t?

(1)$$ t \Delta 2 = 74$$

(2) $$2 \Delta t = 80$$
  • 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 statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • DEACH statement ALONE is sufficient.
  • EStatements (1) and (2) TOGETHER are NOT sufficient.
显示答案
正确答案: C

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