Primesmedium
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An event coordinator is designing a rectangular grid of light bulbs containing exactly bulbs. To make the grid aesthetically pleasing, the number of rows and the number of columns must share no common prime factors other than . If the number of rows is less than the number of columns, how many possible configurations of rows and columns are there?
An event coordinator is designing a rectangular grid of light bulbs containing exactly bulbs. To make the grid aesthetically pleasing, the number of rows and the number of columns must share no common prime factors other than . If the number of rows is less than the number of columns, how many possible configurations of rows and columns are there?