Question: Fifteen balls are put in a triangular array as shown. How many different arrays can be made using balls of three colors if the array

Fifteen balls are put in a triangular array as shown. How many different arrays
can be made using balls of three colors if the array is free to rotate?Fifteen balls are put in a triangular array as shown. How many different arrays
can be made using balls of three colors if the array is free to rotate?
How many different ways are there to 2-color the 64 squares of an 88 chess-
board that rotates freely?
 Fifteen balls are put in a triangular array as shown. How

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