Two unbiased coin are tossed .what is the probability of getting atmost one head?	Choose the correct answer
A) 1/3
B) 3/4
C) 5/7
D) 8/9
E) 2/3
Here S={HH,HT,TH,TT}   Let Ee=event of getting one head   E={TT,HT,TH}   P(E)=n(E)/n(S)=3/4   Ans: 3/4
<result>B</result>
Two unbiased coin are tossed .what is the probability of getting atmost one head?