Posted by **Janet** on Saturday, December 18, 2010 at 8:34pm.

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For a segment of a radio, a disc jockey can play 7 songs. If there are 13 songs to select from, in how many ways can the program for this segment be arranged?

Question # 2

A corporation has ten members on its board of directors. In how many different ways can it elect a president, vice president, secretary, and treasurer?

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