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At the annual BrainBashers puzzle discussion conference, 20 people attended.
At the start of the conference, each person shook hands with every other person, how many handshakes took place in total?
[Ref: ZOXV]
Hint: How many hands did the first person shake?
Answer: 190.
The first person shook hands with 19 others, the second had already shook hands with the first and therefore shook 18 hands, etc: 19+18+17+16+15+14+13+12+11+10+9+8+7+6+5+4+3+2+1 = 190.
Puzzle 46
Which is larger, the number of seconds in a week...
Taking every other letter, starting with the first letter, gives TO BE OR NOT TO BE TH.
Taking every other letter, starting with the second letter, gives AT IS THE QUESTIO.
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