CBSE Class 11-science Answered
If Sn denotes the sum of first n terms of an A.P. whose common difference is d, then find the value of Sn-2Sn-1 +Sn-2
Asked by | 02 Mar, 2013, 11:53: AM
Expert Answer
Sum of n term of the A.P,
Thus, the value of is d.
Answered by | 03 Mar, 2013, 05:56: AM
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