Question

Two coins are tossed simultaneously 1000 times with the following frequencies of different outcomes.


Two heads :210 times
One head :550 times
No head :240 times


Find the probability of occurrence of:-
i)P (two heads + one head)
ii)P (no heads)

Answer 1

P(2heads+1heads)=210+550/1000
760/1000=0.760
P(no heads) =240/1000=0.240

Answer 2

1 p ( 2 heads +1head) = 210 +550/1000 = 19 /25
2 p ( no heads ) = 240 /1000 =6/25