Question

How many different arrangements of the letters in the word SCHOOL are there

Answer 1

Total, we have 6letters where 2O, right? and we have 6 position to plug them in, right?
- - - - - -
for the first position, we have 6 ways to plug the letter in ,
the second position, we have 5 ways
......
so that there is 6! ways to arrange the word SCHOOL
However, because we have 2 of O, so that , the result must be divided to 2!
--> it is \(\dfrac {6!}{2!}= 360 \) ways to arrange SCHOOL

Answer 2

HEHEHE I have test on next Monday, I practice on your problem. Thanks for asking

Answer 3

thanks that really helped