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Problem 277. chance in percent for minimum K heads when a good coin is tossed N times?

Created by AMITAVA BISWAS

For example, chance is 100% for minimum 0 heads when a coin is tossed 7 times. Chance is 50% for minimum 2 heads when a coin is tossed 3 times. Chance is 0% for minimum 12 heads when a coin is tossed 11 times.

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36 correct solutions 30 incorrect solutions
Last solution submitted on Sep 15, 2014

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