Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Engineering Mathematics Combinatorics Summation

Taking the first term of an A.P. to be α, the sum of first m terms is zero, then the sum of next n terms will be

1
\(\frac{n\alpha(n−m)}{m−1}\)
2
\(\frac{n\alpha(n+m)}{m−1}\)
3
\(\frac{n\alpha(n−m)}{n−1}\)
4
\(\frac{n\alpha(m+n)}{1−m}\)
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