When we are using sets containing natural numbers, then N is the universal set.

Calculate the mean deviation about the mean of the set of first n natural numbers when n is even natural number.

Calculate the mean deviation about the mean of the set of first n natural numbers when n is even natural number.

Calculate the mean deviation about the mean of the set of first n natural numbers when n is odd natural number.

Let A be a finite set containing n elements, then the number of relations on A is

If A={1,3,5,7,9,11,13,15,17}, B={2,4,.......,18} and N the set of natural numbers is the universal set, then A' uu {(A uu B) nn B'} is (a) ϕ (b)N (c) A (d) B

Set A and Set B each consist of 5 distinct numbers. The 2 sets contain identical numbers with the exception of the number with the least value in each set. The number with the least value in Set B is greater than the number with the least value in Set A. The value of which of the following measures must be greater for Set B than for Set Delta ?

Answer, whether the following statements are true or false. Give reasons. The set of even natural numbers less than 21 and the set of odd natural numbers less than 21 are equivalent sets.

Let A be a finite set containing 3 elements, then the number of functions from A to A is

The number of subsets of a set containing n elements is