What is the value of the positive integer n ?

(1) n4 < 25

(2) n ≠ n 2

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.

##### 考题讲解

（1）~$x^4<25$~  ，又因为n是正整数，所以，n<~$\sqrt{5}$~≈2.23，n可取1、2，所以根据条件1不能得出n的值。

（2）~$n ≠n^2$~   ，又因为n为正整数，所以有n≠1。仅有条件2也无法得到n的值。