[求助]急问几道PREP的DS题

autumnbreeze

1．问X⁴+Y⁴＞Z⁴

  (1). X²+Y²＞Z²

  (2).X+Y＞Z

答案是E，希望各位NN提供一下解答过程，感觉这一类的题目挺多的

 

2. f=30! , d is a positive integer, d=?

  (1).10^d is a factor of f

  (2).d>b

答案是C

 

3.r和s是数轴上的两个数字，问r的值？

(1).the distance between r and 0 is three times the distance between m and 0

(2).12 is half way between m and n

答案是E，我选的C