Question

Three coins are flipped.

a) How many possible outcomes are there?
b) What is the probability of getting no heads?
c) What is the probability of getting at least two tails?

Answer 1

Explanation:

a

possible outcomes of flipping three coins = 2³ = 8 possible outcomes

let's have a look at the possible 8 outcomes:

H H H

H T T

T H H

T T T

H T H

H H T

T T H

T H T

b)

TTT

probability of getting no heads = 1/8

c)

TTT

HTT

THT

TTH

probability of getting at least two tails = 4/8 = 1/2