Answer to brain teaser #8
All Swaff has to do in order to be the winner, is use hot water.
Geemiee, being less cool than Swaff, didn't know that water with a hot average temperature freezes faster than water that is at room temperature. The phenomenon that hot water may freeze faster than cold is often called the Mpemba effect.
Brain teaser#9
An officer wishing to arrange his men in a solid square found by his first arrangement that he had 39 men left over. He then started increasing the number of men on a side by one, but found that 50 additional men would be needed to complete a new square. How many men did the officer have?
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