Question

Jack and his partner went to a party where four other couples were present. Every person shook hands with everyone else (other than their own partner). When the handshaking was over, Jack wanted to know how many handshakes took place. When he asked around, Jack got nine different answers.
How many handshakes took place?
(Please help asap this is so hard )

Answer 1

Answer:

which person shake 5 times which mean 25 times

Answer 2

Answer:

Step-by-step explanation: 1

1. Nobody shook hands than 8 people so numbers going to be 0, 1, 2, 3, 4, 5, 6, 7, 8

2. The person shook 8 times married with the person shook 0 time

3. The person shook 7 times married with the person shook 1 time

4. The person shook 6 times married with the person shook 2 time

5. The person shook 5 times married with the person shook 3 time

6.  Therefore, only person left is the one shook 4 times, which is Jack's wife

7. Jack's wife shook 4 times so Jack shook 4 times