Represent the following sets in Roster form. (i) A = The set of all even natural numbers less than 20. (ii) B = {y : y = 1/2n, n ∈ N, n ≤ 5}

Question

Represent the following sets in Roster form. 

(i) A = The set of all even natural numbers less than 20. 

(ii) B = {y : y = \(\frac{1}{2n}\), n ∈ N, n ≤ 5} 

(iii) C = (x : x is perfect cube, 27 < x < 216} 

(iv) D = {x : x ∈ Z, -5 < x ≤ 2}

Answer 1

(i) A = {2,4, 6, 8,10, 12, 14,16, 18} 

(ii) N = { 1, 2, 3, 4, 5}

(iii) C = {64, 125}

(iv) D = {-4,-3, -2, -1,0, 1, 2}