Question

a speaks truth in 75% cases and b in 90% cases. in what percentage of cases are they likely to contradict each other in stating the same fact?

Answer 1

Step-by-step explanation:

Let A and B denote A speaks the truth and 'B speaks the truth' respectively..

Hence, they are likely to contradict each other in 30% of the cases in stating the same fact. Though B speaks truth in 90% of the cases but he also lies in 10% of the cases. So, his statement is not always true...