If A = {x: x is an even prime number}, then set A is empty.

A prime number can be even?

A= { x: x is a natural number} B= {x: x is an even natural number} find A intersection B

Identify the null sets among the following C = {x: x is an even prime number } .

For each of the following pairs of sets , identify the disjoint and overlapping sets: A = { x: x is a prime number , x lt 8 } B = {x: x is an even natural number , x lt 8 } .

If A= {x : x is a natural number}, B = {x : x is an even natural number}C = {x : x is an odd natural number} and D = {x : x is a prime number }, find(i) A nnB (ii) A nnC (iii) A nnD (iv) B nnC (v) B nnD (vi) C nnD

STATEMENT-1 : The dual statement of "xis a perfect square or xis a prime number" is "x is a perfect square and a prime number and STATEMENT-2 : If x is a prime number, then it isnot a perfect square.

If A = { x | x in W , x is a multiple of 3 less than 20 } and B = { x | x is an even whole number less than 20 } , then show the relationship between these sets by a Venn diagram .

The method or representation used in the set A={x|x is an even natural number less than 15} is called

The set of odd prime numbers is the empty set.

Taking the set of natural numbers as the universal set, write down the complements of the following sets: (i) {x : x is an even natural number} (ii) { x : x is an odd natural number } (iii) {x : x is a positive multiple of 3} (iv) { x : x is a prime number } (v) {x : x is a natural number divisible by 3 and 5} (vi) { x : x is a perfect square } (vii) { x : x is a perfect cube} (viii) { x : x + 5 = 8 }(ix) { x : 2x + 5 = 9} (x) { x : x ≥ 7 }(xi) { x : x ∈ N and 2x + 1 > 10 }