Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
A group of
7
boys and
3
girls is to be photographed.
​(a) How many ways can they be arranged in one​ row?
​(b) How many ways can they be arranged with the girls in the
back
row and the boys in the
front
​row?
 
 
 
​(a) What expression should be evaluated to find the number of ways the boys and girls can be arranged in one​ row?
 
 
7​!+3​!
 
10​!
 
7​!
 
3​!
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