SOLUTION: Six physics books and five geometry books are on a shelf. How many ways can they be arranged if the physics books are kept together and the geometry books are kept together?
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Question 1155204: Six physics books and five geometry books are on a shelf. How many ways can they be arranged if the physics books are kept together and the geometry books are kept together?
Please show steps! Thanks! Answer by ewatrrr(24785) (Show Source):
Hi
if the 6 physics books are kept together and the 5 geometry books are kept together..
You have two groups... 2! ways of arranging the two groups
IF THE PHYSICS BOOKS AND GEIOMETY BOOKS ARE DIFFERENT FROM ONE ANOTHER RESPECTIVELY
Within the groups... 6! for Physics and 5 factorial for geometry
Ways: 2![6!][5!] = 2[6*5*4*3*2*1][5*4*3*2*1]
Wish You the Best in your Studies.
(Your calculator may have a factorial function on it)
