Brain Teasers and Puzzles

ANSWERS

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Solution:  Put one white stone in a basket by itself. Put all the other sones in the other basket.

If the priest picks the first basket (50%) , then the prisoner is guaranteed to live. (100%)

If the priest picks the second basket (50%), the prisoner has 99/199 chances to live. (49.7%)

(50% X 100%) + (50% x 49.7%) = 74.8%

In total, the prisoner has a 74.8% chance of living by making this arrangement.

 

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