The probability that A speaks truth is 7/9 and that of B speaking truth is 9/13. What is the probability that they agree in stating the same fact? Pick.
A) 18/35
B) 111/117
C) 157/195
D) 192/235
E) None of these
If both agree stating the same fact, either both of them speak truth of both speak false.   Probability = 7/9 * 9/13 + 6/9 * 8/13   = 63/117 + 48/117 = 111/117   ANSWER:111/117
<result>B</result>
The probability that A speaks truth is 7/9 and that of B speaking truth is 9/13. What is the probability that they agree in stating the same fact?