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Find the sum of the following Aps: (i)...

Find the sum of the following Aps:
(i) 2, 7, 12, …….., to 10 terms.
(ii) `-37, -33, -29,` …….., to 12 terms.
(iii) 0.6, 1.7, 2.8,….., to 100 terms
(iv) `(1)/(15), (1)/(12),(1)/(10)`,……,to 11 terms

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CPC CAMBRIDGE PUBLICATION-ARITHMETIC PROGRESSIONS-EXERCISE 1.3
  1. Subba Rao started work in 1995 at an annual salary of Rs.5000 and rece...

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  2. Ramkali saved Rs.5 in the first week of a year and then increased her ...

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  3. Find the sum of the following Aps: (i) 2, 7, 12, …….., to 10 terms. ...

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  4. Find the sums given below : (i) 7+10(1)/(2)+14+……..+84 (ii) 34+32...

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  5. In an AP: (i) given a=5, d=3, a(n)=50, find n and S(n). (ii) give...

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  6. How many terms of the A.P : 9, 17 25,… must be taken to give sum of 63...

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  7. The first of an A.P is 5, the last term is 45 and the sum is 400. Find...

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  8. The first and the last terms of an A.P are 17 and 350 respectively. If...

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  9. Find the sum of first 22 terms of an A.P in which d = 7 and 22nd term ...

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  10. Find the sum of first terms of an A.P whose second and third terms are...

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  11. If the sum of first 7 terms of an A.P is 49 and that of 17 terms is 28...

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  12. Show that a(1), a(2), ….,a(n),… form an A.P where an is defined as bel...

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  13. If the sum of the first n^(th) terms of an A.P is 4n-n^(2) , what is t...

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  14. Find the sum of the first 40 positive integers divisible by 6.

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  15. Find the sum of the first 15 multiples of 8 .

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  16. Find the sum of the odd numbers between 0 and 50.

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  17. A contract on construction job specifies a penalty for delay of comple...

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  18. A sum of Rs. 700 to be used to give seven cash prizes to students of a...

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  19. In a scholl students thought of planting trees in and around the schoo...

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  20. A spiral is made up of successive semicircles, with centres alternatel...

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