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题库 / GMATLA-DS-3
Is ~$x > k?$~
(1) ~$2^{x} • 2^{k}= 4$~
(2) ~$9^{x} • 3^{k}= 81$~
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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两个联立可以， 因为（1）的组合有1，1；2，0；0，2；
（2）的组合有 1，2；0，4；2，0.
所以联立组合只能是 2，0
1里 X+k=2
2里2x+k+4
解出x=2 K=0