Q19:
For each positive integer n, the integer n* is defined by n* = n2 + 1. What is the value of the positive integer k ?
(1) When k is divided by 4, the remainder is 1.
(2) 18 ≤ k* ≤ 36
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:
这题很奇怪，该怎么去入手呢
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