turkey-yks 2021 Q4

turkey-yks · Other · yks-ayt Number Theory GCD, LCM, and Coprimality
Let $m$ and $n$ be positive integers such that
$$\begin{aligned} & \gcd ( m , n ) + \text{lcm} ( m , n ) = 289 \\ & m + n \neq 289 \end{aligned}$$
What is the sum $m + n$?
A) 41
B) 43
C) 45
D) 47
E) 49
Let $m$ and $n$ be positive integers such that

$$\begin{aligned}
& \gcd ( m , n ) + \text{lcm} ( m , n ) = 289 \\
& m + n \neq 289
\end{aligned}$$

What is the sum $m + n$?\\
A) 41\\
B) 43\\
C) 45\\
D) 47\\
E) 49