What is the average of integers from 25 to 41?

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May 31, 2015

#33 = (25+41)/2#

The average of the terms of a contiguous subsequence of any arithmetic progression is the average of the first and last terms.

To see this, notice that if you remove #25# and #41# from your sequence, then the average of the remaining terms is still given by the average of the extreme terms #(26+40)/2 = 33#.

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