Write the set {x : x is a positive integer and `x^(2) < 40`} in the roster form.

Match each of the set on the left described in the roster form with the same set on the right described in the set-builder form : (i) {P, R, I, N, C, A, L} (a) { x : x is a positive integer and is a divisor of 18} (ii) { 0 } (b) { x : x is an integer and x^(2) – 9 = 0 } (iii) {1, 2, 3, 6, 9, 18} (c) {x : x is an integer and x + 1= 1 } (iv) {3, –3} (d) {x : x is a letter of the word PRINCIPAL}

Which of the following pairs of sets are disjoint { x : x is an even integer } and { x : x is an odd integer}

Match roster forms with the set builder form. (i) {p,r,I,n,c,a,l} (a) {x : x is a positive integer and is a divisor of 18} (ii) {0} (b) {x : x is an integer and x^(2)-9=0} (iii) {1,2,3,6,9,18} (c) {x : x is an integer and x+1=1} (iv) {3,-3} (d) {x : x is a letter of the word PRINCIPAL}

In the following, state whether A = B or not: A = {2, 4, 6, 8, 10} B = { x : x is positive even integer and x ≤ 10 }

List all the elements of the following sets : C = {x : x is an integer, x^(2) ≤ 4 }

Solve 5x-3 lt 7 , when x is a positive integer.

Prove that if x and y are odd positive integers , then x^2 +y^2 is even but not divisible by 4.

Taking the set of natural numbers as the universal set, write down the complements of the following sets: { x : x is a positive multiple of 3}

Write the following sets in roster form (i) A={ x : x is a natural number greater than 50 but smaller than 100} B={x : x is an integer, x^(2)=4} (iii) D={x : x is a letter in the word "LOYAL"}

Let all the elements of the following sets: C={x:x" is an integer" x^(2)le4}