+1 vote
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Consider a binomial experiment of flipping a biased coin five times with probability of head ,p=0.75 and probability of tail q=0.25 in each flip.

What is the probability that last two flips will be heads if the first three flips are known to be tails ?
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0
$(0.75)^2$?
0
Don't have the official answer key , it is from the DRDO descriptive exam.

Why have you not considered any calculation for the first three flips of tail ? Though I understood your intuition for the solution .