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in Probability by (51.4k points)

A signal which can be green or red with probability 4/5 and 1/5 respectively, is received by station A and then transmitted to station B. The probability of each station receiving the signal correctly is 3/4. If the signal received at station B is green, then the probability that the original signal is green is

(a) 3/5

(b) 5/7

(c) 20/23

(d) 9/20

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1 Answer

+1 vote
by (51.1k points)

Correct option is (c) 20/23

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