If x = {n 2 +1:n is a positive integer and 1 ≤ n ≤
MATHEMATICS
JAMB 2009
If x = {n2+1:n is a positive integer and 1 ≤ n ≤ 5}, Y = {5n:n is a positive integer and 1 ≤ n ≤ 5}, find x ∩ y.
- A. {5,10}
- B. {5, 10, 15}
- C. {2, 5, 10}
- D. {5, 10, 15, 20}
Correct Answer: A. {5,10}
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