Question

if 3 coins are tossed simultaneously once, what is the probability of getting at least one tail? ​

Answer 1

Answer:

7/8

Step-by-step explanation:

possibility

HHH

HHT

HTH

THH

HTT

THT

TTH

TTT

Answer 2

Answer:

sample space= {HHT HHH TTT THT TTH HTH THH HTH}

n(s) 8

Let a be the event of getting at least one tail

A = {HHT TTT THT TTH HTH THH HTH}

n(A)= 7

probability = n(A)/n(s)= 7/8