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If the sums of n terms of two arit...

If the sums of `n` terms of two arithmetic progressions are in the ratio `(3n+5)/(5n+7)` , then their `n t h` terms are in the ratio `(3n-1)/(5n-1)` (b) `(3n+1)/(5n+1)` (c) `(5n+1)/(3n+1)` (d) `(5n-1)/(3n-1)`

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. The 9t h term of an A.P. is 449 and 449th term is 9. The term which...

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  2. The n t h term of an A.P., the sum of whose n terms is Sn , is (a) S...

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  3. The common difference of an A.P., the sum of whose n terms is Sn , i...

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  4. If the sums of n terms of two arithmetic progressions are in the...

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  5. If Sn denote the sum of n terms of an A.P. with first term a and c...

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  6. If the first term of an A.P. is a and n t h term is b , then its c...

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  7. The sum of first n odd natural numbers is 2n-1 (b) 2n+1 (c) n^2 ...

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  8. Two A.P.’s have the same common difference. The first term of one o...

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  9. If 18 ,\ a ,\ b ,\ -3 are in A.P., the a+b= (a) 19 (b) 7 (c) 11 (d...

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  10. If (5+9+13+\ ddotto\ n\ t e r m s)/(7+9+11+\ ddotto\ (n+1)t e r m s)=(...

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  11. The sum of n terms of an A.P. is 3n^2+5n , then 164 is its (a) 2...

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  12. If the n^(t h) term of an A.P. is 2n+1 , then the sum of first n...

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  13. If 18 t h and 11 t h term of an A.P. are in the ratio 3\ :2 , then ...

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  14. The sum of first 20 odd natural numbers is (a) 100       (b) 210  ...

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  15. The common difference of the A.P. is 1/(2q),(1-2q)/(2q),(1-4q)/(2q),...

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  16. The common difference of the A.P. 1/3,(1-3b)/3,(1-6b)/3,\ dot is (...

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  17. The common difference of the A.P. 1/(2b),(1-6b)/(2b),(1-12 b)/(2b),......

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  18. If k ,\ 2k-1 and 2k+1 are three consecutive terms of an A.P., the va...

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  19. The next term of the AP sqrt(7), sqrt(28), sqrt(63),… is

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  20. The first three terms of an A.P. respectively are 3y-1,\ 3y+5 and 5y...

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