victoriarg77 victoriarg77

10-09-2018
SAT

contestada

A coin is tossed
8
times.
What is the probability of getting all tails? Express your answer as a simplified fraction or a decimal rounded to four decimal places.

Respuesta :

Аноним Аноним

11-09-2018

There are 2^8=256 ways the coins can land, in order.

There are 8!/5!3!=56 ways that the coins could fall with exactly all tails

56/256=28/128=14/64=7/32=0.21875, which rounds to 0.2188.

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