PS 21,31
There are 5 cars to be displayed in 5 parking spaces with all the cars facing the same direction. Of the 5 cars, 3 are red, 1 is blue and 1 is yellow. If the cars are identical except for color, how many different display arrangements of the 5 cars are possible?
(A) 20
(B) 25
(C) 40
(D) [...]
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Written by GHCV on November 26th, 2009 with
8 comments.
Read more articles on GMAT Problem Solving and GMAT Question of the Day.
There are 5 cars to be displayed in 5 parking spaces with all the cars facing the same direction. Of the 5 cars, 3 are red, 1 is blue and 1 is yellow. If the cars are identical except for color, how many different display arrangements of the 5 cars are possible?
(A) 20
(B) 25
(C) 40
(D) 60
(E) 125

Written by GHCV on November 26th, 2009 with
8 comments.
Read more articles on GMAT Problem Solving and GMAT Question of the Day.
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#1. November 13th, 2007, at 6:11 PM.
‘A’ – 20 must be the answer.
We can use the formula for this type of PS = n!
—————–
(a!b!…z!)
where n – total number
a, b, …z are those entities which posses repetitions