X' speaks truth in 60% and 'Y' in 50% of the cases. The probability that they contradict each other while narrating the same incident, is

X speaks truth in 60% and Y in 50% of the cases. Find the probability that they contradict each other narrating the same incident.

A speaks the truth in 70% cases and B in 80% cases. The probability that they will contradict each other in describing a single event is

A speaks truth in 60% of cases, while B in 90% of the cases. In what percent of cases are they likely to contradict each other in stating the same fact?

The probability that A speaks truth is (4)/(5) , while this probability for B is (3)/(4) . The probability that they contradict each other when asked to speak on a fact is

Efficiency of a Carnot engine is 50% when temperature of outlet is 500 K . In order to increase efficiency up to 60% keeping temperature of intake the same what is temperature of outlet?

Two point charges repel each other with a force of 100 N. one of the charges is increased by 10% andother is reduced by 10% . The new force of repulsion at the same distance would be

The simplest formula of a compound containing 50% of x (atomic mass =10)and 50% of element y (atomic mass = 20 ) is