A shopkeeper sells three varieties of perfumes and he has a large number of bottles of the same ...

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A shopkeeper sells three varieties of perfumes and he has a large number of bottles of the same size of each variety in his stock. There are 5 places in a row in his showcase. The number of different ways of displaying the three varieties of perfumes in the showcase is
(A) 6
(B) 50
(C) 150
(D) none of these
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