Mental Floss 159

The answer to last week’s challenge is: Q: A father had 7 daughters. Each of the daughters had one brother. How many children did the father have?

A: 8. Each girl’s brother is the brother of all of them.

This week’s challenge is:

Q: There are two identical jars, one containing 1 bacteria and the other 2 bacteria. Each bacteria reproduces itself every second. The first jar with one bacteria, fills in 60 minutes. How long will it take for the other jar to fill?

The answer along with a new challenge, next week.

Have an excellent weekend …

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