Question1) $m$ and $n$ are integers and $\sqrt{m n}=10$. Which of the (a) 25 (b) 52 following cannot be a value of $m+n$ ? (c) 101 (d) 50 2) The number of factors of a number $N=2^{3} \times 3^{2} \times 5^{3}$ is (a) 18 (b) 45 (c) 48 (d) 9