Q4 of 145 Page 4

List all the elements of each of the sets given below.

D = {x : x = n2, n ϵ N and 2 ≤ n ≤ 5}.


Here, x = n2 and 2 ≤ n ≤ 5

∴ n = 2, 3, 4, 5


[it is given that n is less than equal to 2 and greater than equal to 5]


If


n = 2, x = (2)2 = 4


n = 3, x = (3)2 = 9


n = 4, x = (4)2 = 16


n = 5, x = (5)2 = 25


So, D = {4, 9, 16, 25}


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