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If the sum of p terms of an AP is the sa...

If the sum of p terms of an AP is the same as the sum of its q terms, show that the sum of its `(p+q)` terms is zero.

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  3. If the sum of p terms of an AP is the same as the sum of its q terms, ...

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  4. The sum of the first p,q,r terms of an AP are a,b,c respectively, prov...

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  5. The ratio of the sums of m and n terms of an A.P is m^2:n^2. Show that...

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  6. If the sum of n terms of an A.P is 3n^2+5n and its m^(th) term is 164....

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  7. Insert five numbers between 8 and 26 such that the resulting sequence...

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  8. If (a^n+b^n)/(a^(n-1)+b^(n-1)) is the A.M. between a and b, find the v...

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  9. Between 1 and 31, m numbers have been inserted in such a way that the ...

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  10. A man starts repaying a loan as a first instalment of Rs. 100. If he i...

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  13. Which term of the G.P., 2,8,32, ., up to n terms is 131072 ?

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  17. The sum of first three terms of a Geometric Progression is 13/12 and t...

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  18. Find the sum to n terms of the sequence 7,77,777,7777,…….

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