hwo many arrangements of ISOSCELES can be done if no 2 letters of clsss can be together , i have tried many times but never could get the answer the answer is 240 please help me

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- March 19th 2013, 07:59 PM #1

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- March 19th 2013, 09:44 PM #2

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## Re: permuatation help

Hello, righteous818!

How many arrangements of ISOSCELES can be done if no 2 letters of CLSSS can be together?

We have 9 spaces to fill.

. .

Place in the four boxes.

. . There are: ways.

Place in the five blanks.

. . There are: ways.

Therefore, there are:. arrangements.