2. 外语
  3. There are 10 people in a room. If each person shakes hand with exactly 4 other people, what is the total number of handshakes?

There are 10 people in a room. If each person shakes hand with exactly 4 other people, what is the total number of handshakes?

admin2020-05-11  46
问题 There are 10 people in a room. If each person shakes hand with exactly 4 other people, what is the total number of handshakes?
选项 A、20
B、30
C、40
D、50
E、60
答案A
解析 10个人，每人握手4次，那总数是40次。但每次握手是两个人，相当于每次握手的行为算了2次，所以40/2=20，答案是A。
转载请注明原文地址:https://kaotiyun.com/show/PvkO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)