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An arithmetic sequence formed of 11 terms, and the sum of all its terms equals to 220. Find the middle term?

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An arithmetic sequence formed of 11 terms, and the sum of all its terms equals to 220. Find the middle term in that sequence.

posted May 27, 2015 by anonymous

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1 Solution

+2 votes

For an A.P with odd number of terms

Sum of A.P. == (number of terms)*(middle term)

=== 220 = 11*(middle term)

middle term = 20

solution May 27, 2015 by Ankit Kamboj



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