GWD-1-31 ?

vincentwh

Q31:

A positive integer n is said to be “prime-saturated” if the product of all the different positive prime factors of n is less than the square root of n.  What is the greatest two-digit prime-saturated integer?

 

A.      99

B.      98

C.      97

D.     96

E.      95

咋做? 是2*3< 4√2*√3 ?

Cantaloupe

whatever n=ABCDE 都有   9<根号n<10

99-> 3,11

98-> 2,7

97 -> 97

96 -> 2,3

95 - > 5.19

so only D.

enyika2014

bu ming bai wa

czhsc

Mark一下！