{5,10}
{5, 10, 15}
{2, 5, 10}
{5, 10, 15, 20}
Correct answer is A
X = {n(^2\)+1:n is a positive integer and 1 ≤ n ≤ 5}
Implies X = {2, 5, 10, 17, 26} i.e. put n= 1, 2, 3, 4 and 5
Y = {5n:n is a positive integer and 1 ≤ n ≤ 5}
Put X = 1, 2, 3, 4, and 5
Y = {5, 10, 15, 20, 25}
X ∩ Y = {2, 5, 10, 17, 26} ∩ {5, 10, 15, 20, 25}
= {5, 10}