Posted by soka on Saturday, August 6, 2011 at 2:49pm.
What is the sum of a 10–term arithmetic sequence where the first term is 3 and the last term is 75?

arithmetic  Anonymous, Saturday, August 6, 2011 at 4:25pm
10*(3+75)/2

arithmetic  :D, Thursday, November 1, 2012 at 5:44pm
IT IS CORRECT!
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