how many different ways can the group be ordered?

Calculus
Tutor: None Selected Time limit: 1 Day

five children, a teacher and a parent helper are going on a walk. they are lining up and the teacher must be first and the parent helper must be last. how many different ways can the group be ordered? 

Jun 2nd, 2015

I'll post answer in a few minutes

Jun 2nd, 2015

5!=120 ways

Jun 2nd, 2015

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Jun 2nd, 2015
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Jun 2nd, 2015
Dec 10th, 2016
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