GWD22-11

littleblues

Q11:

What is the remainder when the positive integer n is divided by the positive integer k, where k > 1?

(1)   n = (k+1)3

(2) k = 5

                  

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.

                                                                                                 Answer:   A

怎么会是A，不是C才能算出吗

罗杰Liu

(K+1)^3=K^3+3K^2+3K+1. N divide by K, remainder is 1. (1) alone is

sufficient.

littleblues

谢谢楼主的回答，明白了。