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Find the sum of the first 12 terms of th...

Find the sum of the first 12 terms of the A.P. -37, -33, -29…….. .

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`-30`
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OSWAL PUBLICATION-ARITHMETIC PROGRESSIONS -NCERT CORNER (EXERCISE-5.3)
  1. Find the sum of the following A. P. s: 2,7,12,…, to 10 terms.

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  2. Find the sum of the first 12 terms of the A.P. -37, -33, -29…….. .

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  3. Find the sum of the following A. P. s: 0.6 , 1.7, 2.8 ,…, to 100 ter...

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  4. Find the sum of the following A. P. s: (1)/(15) ,(1)/(12), (1)/(10)...

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  5. Find the sums given below: 7 + 10 1/2 + 14 + ...+ 84

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  6. Find the sums given below: 34 + 32 + 30 + ...+ 10

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  7. Find the sums given below: -5 + (-8) + (-11) + ...+ (-230)

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  8. In an A. P. : given a = 5, d = 3, a (n) = 50, find n and S (n).

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  9. In an A. P. : given a = 7, a (13)= 35, find d and S (13)

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  10. In an A. P. : given a (12) = 37, d = 3, find a and S (12).

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  11. given: a3=15,S[10]=125, find d and a[10]

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  12. given d = 5, S9 = 75, find a and a9.

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  13. In an A. P. : given a = 2, d = 8, S (n) = 90, find n and a (n)

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  14. In an A. P. : given a = 8, a (n) = 62, S (n) = 210, find n and d.

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  15. In an AP, given an=4, d=2, Sn=-14 find n and a

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  16. In an A. P. : given a = 3, n = 8, S = 192, find d.

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  17. In an A. P. : given l = 28, S = 144, and there are total 9 terms Fin...

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  18. How many terms of the AP: 9, 17, 25, . . . must be taken to give a sum...

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

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  20. The first and the last terms of an A.P. are 17 and 350 respectively. I...

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