Posted by **sam** on Wednesday, December 26, 2007 at 11:07pm.

A total of 180 marbles (gray, white, and black) are placed in a line. If the first five are gray, followed by four, followed by three black, followed by five gray, followed by four white, followed by three black,... If this pattern continues, what is the color of the 158th marble in this line?

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