But, can we find the probability that
the ball drawn is from a particular bag (say Bag II), if the colour of the ball drawn is
given Here, we have to find the reverse probability of Bag II to be selected when an
event occurred after it is known Famous mathematician, John Bayes' solved the problem
of finding reverse probability by using conditional probability The formula developed
by him is known as ‘Bayes theorem’ which was published posthumously in 1763