The interior surfaces of a children's room (including ceiling, floor and 4 faces) are to be painted by 6 different colors. In how many ways can be this be done?  Choose the correct answer:
A) A.720	B) B.256	C) C.1	D) D.12	E) E.36
If I have to paint 6 faces with 6 different colour...   First face can have 6c1 options,   2nd would have 5c1, and subsequent ones would have 4c1, 3c1, 2c1 and 1 options respectively.   Total options = 6c1 X 5c1 x 4c1 x 3c1 x 2c1 x 1 = 720 distinct ways   Correct answer - A.720
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The interior surfaces of a children's room (including ceiling, floor and 4 faces) are to be painted by 6 different colors. In how many ways can be this be done?