1985 AJHSME Problems/Problem 9
Revision as of 21:48, 13 January 2009 by 5849206328x (talk | contribs)
Problem
The product of the 9 factors
Solution
If we write out the whole product, then we'll notice a lot of terms cancel. In fact, every term in the numerator except for the and every term in the denominator except for the will cancel, so the answer is , or
If you don't believe this, then write the product as
Everything except for the first term is , so the product is