> 英语 >
一道sat2数学题,
the only prime factors of a number 'n' are 2,5,7,and 17.which of the following could not be a factor of
a)10 b) 20 c) 25 d)30 e)34
人气:349 ℃ 时间:2020-04-16 04:53:09
解答
亲,选择C吧,题目意思是说,只能n的因子只能是2,5,7,17,而10=2*5,20=2*2*5,30=2*3*5【3不符合要求】,34=2*17,所以选择C.
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版