Two unbiased coins are tossed. Find the probability of getting at most one head?
Choose the correct answer
A) 1/2  B) 3/4  C) 2/5  D) 2/3  E) 1/4
S = {HH,HT,TH,TT}   E = Event of getting at most one head   E = {TT,HT,TH}   P(E) = 3/4   Answer is 3/4
<result>B</result>
Two unbiased coins are tossed. Find the probability of getting at most one head?