Question

Determine the probability that at least one head appears in three flips of a fair coin. Round your answer to one decimal place.

Answer 1

is it .875

Answer 2

all 8 options are

HHH,HHT,HTH, HTT, THH THT TTH TTT. (8 in total)

seven do have atleast one head so 7/8.

Answer 3

or u cud say that P(3 heads) = 1/8
P(at least one head) = 1- p(3 heads) = 1- 1/8 = 7/8

Answer 4

= 0.875
= 0.9 (rounded off to one decimal place)