Mental Floss 259

The answer to last week’s challenge is, Q: How can you build pig pens so that you can put nine pigs in four pens so that each pen has an odd number of pigs?

A: Put three pigs in each of three pens (or 1, 3, 5), then surround those three pens with one larger pen.

This week’s challenge is:

Q:  You are inside a perfectly cubical room where each wall, the ceiling and the floor are mirrors. There is nothing else in the room. How many reflections can you see if you’re facing in one direction and can look up, down left and right?

The answer along with a new challenge, next week.

Have an excellent weekend!

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