A set P contains n elements. A function from P to P is picked up at random. The probability that this function is onto is

A set "A" contains 'm' elements another set "B" contains 'n' elements. A relation is formed from A to B. Then the probability that the relation is a function is

Suppose A is a set containing n elements. Two subsets P and Q of A are chosen at random. If the probability that P is a subset of Q is 243/1024, then n is equal to

Let X be a set containing n elements. If two subsets A and B of X are picked at random, the probability that A and B have the same number of elements is

Let X be a set containing n elements. If two subsets A and B of X are picked at random, the probability that A and B have the same number of elements is

Let X be a set containing n elements. If two subsets A and B of X are picked at random, the probability that A and B have the same number of elements is

.Let X be a set containing n elements. If two subsets A and B of X are picked at random, the probability that A and B have the same number of elements is

Let X be a set containing n elements.If two subsets A and B of X are picked at random,the probability that A and B have the same number of elements is