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A biased coin shows head with a probabil...

A biased coin shows head with a probability of `3/4` and a tail with a probability of `1/4,` Let p, denotes the probability that no three or more heads appear consecutively in n throws of the coin, now.. If `p_n=alphap_(n-1)+betap_(n-2)+gammap_(n-3)` then `64(alpha+beta+gamma)` is equal to ...

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