Sat 22 Aug 2009

## The “Coin-Flip” puzzle

Posted by Happy under puzzle

Comments Off on The “Coin-Flip” puzzle

On Monday, you flip coins all day. You start flipping coins until you see the pattern Head, Tail, Head. Then you record the number of flips required, and start flipping again until you see that pattern, you record it, and start again. At the end of the day you average all of the numbers youâ€™ve recorded.

On Tuesday you do the EXACT same thing except you flip until you see the pattern Head, Tail, Tail.

Will Mondayâ€™s number be higher than Tuesdayâ€™s, equal to Tuesdayâ€™s, or lower than Tuesdayâ€™s?

Solution over the fold.

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