Acoin 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.

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.