Tuesday
March 31, 2015

Homework Help: Math

Posted by Nicki on Monday, April 25, 2011 at 3:02pm.

Suppose there are 500 pennies in a row... (math problem)?
The pennies are all "heads up"

Now suppose that 500 people line up and ...

Person #1 turns over all the pennies
Person #2 turns over every 2nd penny, starting with penny number 2
Person #3 turns over every 3rd penny, starting with penny number 3
Person #4 turns over every 4th penny, starting with penny number 4
etc..

After everyone has gone through the line, which pennies will show "tails"?

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