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

given: `a_3=15`,`S_[10]=125`, find d and `a_[10]`

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The correct Answer is:
`a_(10)=8`
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MTG IIT JEE FOUNDATION-ARITHMETIC PROGRESSIONS -NCERT SECTION EXERCISE 5.3
  1. In an A.P: given a= 7 ,a(13)=35 , find d and S(13)

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

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

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

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

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

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  7. In an A.P: given a(n) = 4 , d = 2 , S(n) = -14 , find n and a .

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

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

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

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  11. The first term of an A.P. is 5 , the last term is 45 and the sum is 40...

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  12. The first and the last terms of an A.P. are 17 and 350 respectively .i...

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  13. Find the sum of first 22 terms of an A.P. in which d = 7 and 22^(nd) t...

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  14. Find the sum of first 51 terms of an AP whose second and third terms ...

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  15. If the sum of first 7 terms of an AP is 49 and that of 17 terms is ...

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  16. Show that a1,""""a2,""""dot""dot""""dot,""an ,""dot""""dot""""dot form...

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  17. Show that a1,""""a2,""""dot""dot""""dot,""an ,""dot""""dot""""dot form...

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  18. If the sum of the first n terms of an AP is 4n-n^2, what is the first ...

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

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

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