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26 th

Q.26. If the pth term of an A.P. is a and qth term is b, show that the sum of (p + q) terms is $\frac{p+q}{2}\left[a+b+\frac{a-b}{p-q}\right]$

Q.26. If the pth term of an A.P. is a and qth term is b, show that the sum of (p + q) terms is $\frac{p+q}{2}\left[a+b+\frac{a-b}{p-q}\right]$

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