There were 15 persons in a group, they shook hands with each other, then tell how many times the total number of hands were shaken -
5 1411 61a074db4a394508acdc44b1
Q:
There were 15 persons in a group, they shook hands with each other, then tell how many times the total number of hands were shaken -
- 1210false
- 2225false
- 3105true
- 4150false
- Show Answer
- Workspace
- Discuss