CBSE Class 11-science Answered
Solve this
Asked by Sddmath2015 | 04 Sep, 2018, 11:24: PM
Expert Answer
1 + (2 + 3) + (4 + 5 + 6) + ..... n terms
1 + 2 + 3 + 4 + 5 + 6 + ......n terms
Hence, total number of terms are .
Sn =
Hence, we get
Answered by Sneha shidid | 06 Sep, 2018, 12:46: PM
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