State which of the following sets are finite or infinite.
(i)A={x : x in N and (x-1) (x-2) =0}` (ii) B=`{x : x in N and x^(2)=4}`
(iii) C=`{x : x in N and 2x-1=0}` (iv) D=`{x : x in N" is prime"}`
(v) E=`{x: x in N and" x is odd"}`

State which of the following sets are finite or infinite : (i) { x : x ∈ N and (x – 1) (x –2) = 0 } (ii) { x : x ∈ N and x^(2) = 4 } (iii) { x : x ∈ N and 2x –1 = 0 } (iv) { x : x ∈ N and x is prime} (v) { x : x ∈ N and x is odd}

Classifiy the following as finite or infinite set {x:x epsilonN and x is prime }

State which of the following sets are finite and which are finited. Give reasons for your answer. (i) A={ x : x in N and x lt 100} (ii) B={x : x in N and x le 5} (iii) C={1^(2), 2^(2), 3^(2),....} (iv) D={1,2,3,4} (v) {x : x is a day of the week}

If A={1,2}, B={x:x in N and x^2-9=0} .Find A xx B

State the reasons for the following : (i) {1,2,3.....10} ne {x : x ne N and 1 lt x lt 10} (ii) {2,4,6,8,10} ne {x: x =2n+1 and x ne N} (iii) {5,15,30,45} ne {x : x is a multiple of 15} (iv) {2,3,5,7,9} ne {x : x is a prime number}

Find the value of the polynomial 4x ^(2) - 5x +3, at (i) x =0 (ii) x =-1 (iii) x =2 (iv) x = 1/2

Which of the following pairs of sets are equal? Justify your answer. (i) X, the set of letters in “ALLOY” and B, the set of letters in “LOYAL”. (ii) A = {n : n ∈ Z and n^(2) ≤ 4} and B = {x : x ∈ R and x^(2) – 3x + 2 = 0} .

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}