If the signal received.... | JEE Advanced 2010 | Mathematics

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JEE Advance 2010

Paper-2

Question

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

Select the correct option:

A

$\frac{3}{5}$

B

$\frac{6}{7}$

C

$\frac{20}{23}$

D

$\frac{9}{20}$x

✓ Correct! Well done.

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