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Both are equivalent!

* Probability of using 50-50 and getting the right answer:

1/2

* Probability of using double dip and getting the right answer:

= Probability that either first or the second guess is correct

P(First guess is correct) = 1/4

+

P(First guess in wrong and second guess is correct) = 3/4 * 1/3 = 1/4

= 1/2

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13y ago

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