If x n2 1 n is positive integer and 1 leq n leq... - JAMB Mathematics 2009 Question
If x = {n2 + 1 : n is positive integer and 1(\leq) n (\leq) 5}
y = {5n : n is positive integer and 1 (\leq) n (\leq) 5}, find x ∩ y.
A
{5, 10}
B
{5, 10, 15}
C
{2, 5 ,10}
D
{5, 10, 15, 20}
Ask EduPadi AI...
Correct Option: A
X : (n2 + 1) = 2, 5, 10, 17, 26
y : 5n = 5, 10, 15, 20, 25
x ∩ y = (5, 10)
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