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If sum of m terms is n and sum of n term...

If sum of m terms is n and sum of n terms is m,then show that the sum of `(m+n)` terms is `-(m+n)`.

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CHETANA PUBLICATION-Arithmetic Progression-EXERCISE
  1. Mr. Shah borrows ₹4000 and agrees to repay with a total interest of ₹5...

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  2. A farmer borrows ₹1000 and agrees to repay with a total interest of ₹1...

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  3. The sequence -10,-6,-2,2,…… a)is an A.P, Reason d=-16 b)is an A.P, Rea...

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  4. Sum of first five multiples of 3 is…. a)45 b)55 c)15 d)75

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  5. For an A.P.: 2,-2,-6,-10,…. find d. a)-4 b)2 c)4 d)1

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  6. For an A.P, if a=-3 and d=4, then find tn.

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  7. Determine whether following sequence is an A.P : 2,-2,-6,-10,….

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  8. In an A.P, a=6 and d=3. Then find S27.

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  9. Find the 19th term of the following A.P. 7,13,19, 25,…

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  10. Find the sum of all natural numbers from 1 to 140 which are divisible ...

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  11. Number of literate people in the year 2010 is 4000. This number increa...

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  12. Find the consecutive terms in an A.P whose sum is 12 and the sum of th...

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  13. If the sum of p terms of an A.P is equal to the sum of q terms, then ...

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  14. Mr. Ajay borrows ₹3,25,000. He paid ₹30,500 in the first month and the...

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  15. 200 logs of wood are stacked in the following manner:20 logs in the bo...

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  16. If sum of m terms is n and sum of n terms is m,then show that the sum ...

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  17. How many terms of the A.P 16,14,12,….. Are needed to obtain the sum 60...

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  18. If pth, qth and rth terms of an A.P. are l, m, n respectively, show th...

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  19. Jinal saves ₹1600 during first year,₹2100 in the second year,₹2600 in ...

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  20. Find the middle term of sequence formed by all three digit numbers whi...

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