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题目内容双击单词支持查询和收藏哦～
Each person at a party shook hands exactly once with each of the other people at the party.
There was a total of exact 21 handshakes exchanged at the party.
Quantity A: The number of people at the party
Quantity B: 8
There was a total of exact 21 handshakes exchanged at the party.
Quantity A: The number of people at the party
Quantity B: 8
B显示答案
以上解析由 考满分老师提供。
