The Handshake Problem- Couples Though...How many hands did Ben shake?

Question

A Party consists of exactly 3 couples. Ben and Alice are oe of the couples. several of the people shake hands with the conditions that:

1. No two people shake hands with each other more than once

2. No one shakes the hand of the person whom they came with

How many hands did Ben Shake?

Answer 1

4

Answer 2

at most, 4

Answer 3

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Answer 4

did he even shake any?

or like four?