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Friday, September 5, 2014

Brain Teaser 9/6/2014

A man makes the following proposition to his friend: "I will let you flip a coin 20 times. Each time the coin lands on heads, I will give you $2.00. However, each time the coin lands on tails, you must give me $3.00." His friend flips the coin 20 times and the end result is that no money is to change hands. How many times did the coin land on heads?
Solution
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