Question

If $X=\{4^n-3n-1:n\in N\}$ and $Y=\{9(n-1):n\in N\}$, where N is the set of natural numbers, then $X\cup Y$ is equal to:

• A. X
• B. Y
• C. N
• D. Y - X

Answer 1

Answer: (B)

Correct answer is (b) Y