Suppose all you have is a fair coin How can you use it toSol

Suppose all you have is a fair coin. How can you use it to

Solution

The unfair coin follow a binomial distribution with p = 1/rt2 and q =1-p

Hence for n trials we use binomial formula for r heads

as nCrp^rq^n-r

Instead of p =q =0.5 use p = 1/rt 2 and q =1-p

to get the required probability.