Question 22
Let $a, b, c, d, e, f, g, h, i$ be the distinct integers lying in between $1$ and $9$ (both $1$ and $9$ inclusive). Let $N$ be the maximum of the three numbers $a \times b \times c$, $d \times e \times f$ and $g \times h \times i$. Determine the minimum value the number $N$ can take.