The probability that A speaks truth is 4/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?  Select the correct option.
A) 19/35
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   = 4/5 * 4/7 + 1/5 * 3/7   = 16/35 + 3/35   = 19/35   19/35nswer: 19/35
<result>A</result>
The probability that A speaks truth is 4/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?