Mental Floss 318
The answer to last week’s challenge is: Q: Cigars cannot be entirely smoked, so a hobo who collects cigar butts can make a cigar to smoke out of every 5 butts he finds. Today he has collected 25 butts. How many cigars will he be able to smoke?
A: He makes 5 cigars from the 25 butts found and after that he smokes an extra one from the 5 butts left over.
This week’s thinking challenge is …
Q: If seven people meet each other and each shakes hands only once with each of the others, how many handshakes will there have been?
The answer along with a new challenge, next week.
Have an excellent weekend!
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