Number of ways of dividing m+n different things into two groups containing m and n things respectively
is given by \[ ^{m+n}C_{m}\]=\[\frac{(m+n)!}{m!n!}\]
For example- No of ways of dividing 10 different things into groups of 6 boys and 4 girls is given by
\[\frac{(10)!}{6!4!}\]=210
Boundary condition - m\[\neq \]n
