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in an AP , Sp=q , Sq=p and Sr denotes th...

in an `AP , S_p=q , S_q=p` and `S_r` denotes the sum of the first `r` terms. Then `S_(p+q)=`

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A DAS GUPTA-Progression, Related Inequalities and Series-Exercise
  1. If a1,a2...................,a19 are the first 19 term of an AP and a1+...

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  2. The sum of the first 100 terms common to the series 17, 21, 25, 29...

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  3. in an AP , Sp=q , Sq=p and Sr denotes the sum of the first r terms. Th...

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  4. Sum of the first p, q and r terms of an A.P are a, b and c, respectiv...

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  5. If S(n) is the sum of the first n terms of an A.P. then :

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  6. If mth term of am A.P.is 1/n and nth term is 1/m find the sum of first...

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  7. The first term of an A.P. is a and the sum of first p terms is zero, s...

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  8. Given an A.P. whose terms are all positive integers. The sum of its fi...

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  9. If the sum of m terms of an A.P. is equal to the sum of either the nex...

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  10. if S1 , S2 , S3..........,Sq are the sums of n terms of q ,AP's whose ...

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  11. If S1 be the sum of (2n+1) term of an A.P. and S2 be the sum of its od...

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  12. The number of terms in an AP is even. The sum of the odd terms is 24 w...

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  13. The ratio of the sums of n terms of two Aps is (3n-13) : (5n+21). Find...

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  14. Find the AP in which the ratio of the sum to n terms to the sum of suc...

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  15. If x,2x+2,3x+3 are the first three terms of a GP, find the fifth term ...

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  16. In a GP, t4=27 and t7=729. Find t(11) where tn denotes the nth term.

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  17. In a GP, t4=27 and t7=729. Find t(11) where tn denotes the nth term.

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  18. In a GP, t(p+q)=a and t(p-q)=b. Prove that tp=sqrt(ab).

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  19. If the pth, qth and rth terms of a G.P. are a,b and c, respectively. ...

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  20. If a be the first term, b be the nth term and P be the product of n te...

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