Respuesta :

AL2006
Probability on the first flip = 1/2.
On the second flip ... 1/2
On the third flip ... 1/2
On the fourth floor ... 1/2.

On all 4 flips: 1/2 x 1/2 x 1/2 x 1/2 = 1/16.

That's 6.25 %

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