The probability that A speaks truth is 1/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?  Options.
A) 13/35
B) 18/38
C) 18/36
D) 18/16
E) 18/31
If both agree stating the same fact, either both of them speak truth of both speak false.   Probability   = 1/5 * 4/7 + 4/5 * 3/7   = 1/35 + 12/35   = 13/35   13/35nswer: 13/35
<result>A</result>
The probability that A speaks truth is 1/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?