Question

If two jobs A and B can be done independentely by m and n ways respectiveley, then the number of ways by which job A and job B can be done?

• A. $(m+n)$
• B. $(m+n)(m+n)$
• C. $(m\times n)$
• D. $(m+n)(m\times n)$

Answer 1

The correct option is C $(m\times n)$

Here we can see that for each different ways in which job A can be done, job B can be done in n different ways. So, job A and job B can be done in $(m\times n)$ways. Option (c) is correct