+0  
 
0
31
1
avatar+2653 

I have $3$ different mathematics textbooks, $2$ different psychology textbooks, and $2$ different chemistry textbooks. In how many ways can I place the $7$ textbooks on a bookshelf, in a row?

 May 9, 2024
 #1
avatar+9673 
0

Simply divide by the amount you have overcounted using 7!.

 

\(\text{Answer} = \dfrac{7!}{3!2!2!} = 210\)

 May 10, 2024

1 Online Users

avatar