Question

In how many ways can 8 letters be posted in 4 post boxes

Answer 1

if all 8 letters are same and post boxes are also similar then it will be 8C4 for further query ask in comment section

Answer 2

Answer:

Number of ways = 70

Step-by-step explanation:

To find possible number of ways we use the concept of combination.

To arrange n objects in r number of ways we have the formula :

$_{r}^{n}\textrm{C}$

Now, we have to post 8 letters in 4 post boxes , so to find possible number of ways of posting 8 letters is :

n = 8 , r = 4

$\text{Number of ways = }_{4}^{8}\textrm{C}\\\\\implies\text{Number of ways = } \frac{8!}{4!\times 4!}\\\\\bf\implies\textbf{Number of ways = } 70$