The answer to last week’s 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?
A: 21 handshakes.
This week’s thinking challenge is …
Q: At noon and at midnight, the hands on a clock are in exactly the same place. How many other times between noon and midnight do the hour and the minute hands cross?
The answer along with a new challenge, next week.
Have an excellent weekend!