A fair coin is tossed 10 times. What is the probability that ONLY the ...
Let A be the event that first toss is head
And B be the event that second toss is head.
By the given condition rest all 8 tosses should be tail
∴ The probability of getting head in first two cases
View all questions of this testA fair coin is tossed 10 times. What is the probability that ONLY the ...
First two tosses we need Head only so (1/2)×(1/2) = 1/4
no other 8 cases are eligible here
so, option A is correct
A fair coin is tossed 10 times. What is the probability that ONLY the ...
Sample space = (H,H,T,T,T,T,T,T,T,T)
P(H)=1/2
P(T)=1-(1/2)=1/2
P(only the first two tosses would yield Heads)=(1/2*1/2)*(1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2)
=(1/2)^10