Simple
For D,E,F,G
There will be 4!( 4x3x2x1) ways to be arranged and so 24 and the question is asking how many more ways so 24-6=18
At the end did you learn factorials
Section 6 #8
There are 6 different ways to arrange the 3 letters E,F, and F in a row from left to right. HOw many more ways are there to arrange the 4 letters D,E,F,G in a row from left to right?
The correct answer is 18. Any tips? Thanks in advance