POW: 10-15-2018

POW: 10-08-2018

Riddle:

Answer:

Turn over both hourglasses at once. When the four-minute hourglass runs out, turn it over. When the seven-minute hourglass runs out, turn it over. When the four-minute timer runs out this time (eight minutes have elapsed), the seven-minute hourglass has been running for one minute. Now turn over the seven minute timer back over. When the timer runs out, nine minutes have elapsed.

POW: 10-01-2018

POW: 09-24-2018

POW: 09-17-2018

POW: 09-10-2018

POW: 09-03-2018

POW: 08-27-2018

POW: 08-20-2018

POW: 08-13-2018

To see more past Problem of the Week's refer to the Riddles Newsletter annals.