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February 7, 2015

Three Choices with One Coin

At a restaurant, how could you choose one out of three desserts with equal probability with the help of one single coin?


Noggin Noddlebright said...

Flip the coin twice.
HH = 1st dessert.
HT = 2nd dessert.
TH = 3rd dessert.
TT = Start over.

Anonymous said...

Yup, binary.
00 nothing
01 dessert 1
10 dessert 2
11 dessert 3

Anonymous said...

heads is dessert 1
tails is dessert 2
the side of the coin is dessert 3