Question

The number of different ways of dividing mn different things into $n$ equal groups is

• A. $\frac{(m n) !}{(m !)^n \cdot n !}$
• B. $\frac{( mn ) !}{( n !)^{ m } \cdot m !}$
• C. $\frac{( mn ) !}{( m !)^{ n }}$
• D. $\frac{( mn ) !}{( n !)^{ m }}$

Answer 1

Answer: (A)

Correct answer is (a) $\frac{(m n) !}{(m !)^n \cdot n !}$