英語翻譯
英語翻譯
There were 8 persons at a brithday party.Everyone shook hands with one another.Nobody shook hands with the same person twice.How many handshakes were exchanged at the party?
There were 8 persons at a brithday party.Everyone shook hands with one another.Nobody shook hands with the same person twice.How many handshakes were exchanged at the party?
英語人氣：101 ℃時間：2020-06-04 11:13:35
優(yōu)質解答
生日聚會上共有8個人.每個人都和另一個人彼此握手.沒人和同一個人握兩次手.那么,在聚會上,這些人一共交換握了幾次手?
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