GWD M2 Q9

大头的宝宝

If n and t are positive integers, is n a factor of t?
(1)n = 3^n-z

(2) t = 3ⁿ



A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

我找到的答案选E,C的都有~大牛们帮我解一下，我一碰到这种因子的问题就晕菜

Heather_Lau

E吧,3^z无法确认是不是整数~