The probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?

2 Answers on this Question

1. 18/35

   Reply

2. If both agree stating the same fact, either both of them speak truth of both speak false.
   ∴ Probability
   =3/5×4/7+2/5×3/7=12/35+6/35=18/35

   Reply