Given a coin which gives HEADS with probability 1/4 and TAILS with 3/4 – InterviewSolution

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1.	Given a coin which gives HEADS with probability 1/4 and TAILS with 3/4. The coin is tossed k times. What is the probability that we get at least k/2 HEADS is less than or equal to?(A) (1/2) k/5(B) (1/2) k/2(C) (1/3) k/2(D) (1/5) k/2
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