Mathematics - Functions Question with Solution | TestHub

The number of functions from the set $\mathrm{A}=\{0,1,2\}$ in to the set $\mathrm{B}=\{0,1,2,3,4,5,6,7\}$ such that $f(i)\le f(j)$ for $\mathrm{i}<\mathrm{j}$ and $i,j\in A$ is