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If (3+5+7+ u p tont e r m s)/(5+8+113 u...

If `(3+5+7+ u p tont e r m s)/(5+8+113 u p to10t e r m s)=7,` then find the value of `ndot`

A

35

B

36

C

37

D

38

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AAKASH INSTITUTE-SEQUENCES AND SERIES -Assignment (SECTION - A) One option is correct
  1. If four numbers in A.P. are such that their sum is 50 and the great...

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  2. If the sum of p terms of an A.P. is q and the sum of q terms is p, the...

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  3. If (3+5+7+ u p tont e r m s)/(5+8+113 u p to10t e r m s)=7, then find...

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  4. How many terms of the series 54,51, 48,.. be taken so that their sum i...

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  5. There are n A.M.s between 3 and 17. The ratio of the last mean to the ...

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  6. n A.M.\'s are inserted between 1 and 31 such that the ratio of the 7th...

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  7. Four numbers are in arithmetic progression.The sum of first and last t...

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  8. If the sum of three numbers which are in A.P is 27 and the product of ...

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  9. If n arithmetic means are inserted between 2 and 38, then the sum of t...

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  10. If S(n) denote the sum to n terms of an A.P. whose first term is a ...

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  11. If three positive numbers a, b, c are in A.P. and 1/a^2,1/b^2,1/c^2 a...

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  12. The sum of the series a-(a+d)+(a+2d)-(a+3d)+ up to (2n+1) terms is -n ...

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  13. Let Sn denotes the sum of the first of n terms of A.P. and S(2n)=3Sn ...

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  14. Let S(n) denotes the sum to terms of an A.P. whose first term is a . I...

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  15. If the first second and last term of an A.P. are a ,\ b ,\ a n d\ 2a\ ...

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  16. Sum of first n terms of an A.P. whose last term is l and common dif...

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  17. If one geometric mean G and two arithmetic means A(1)andA(2) are inser...

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  18. The fourth term of the G.P. 4, - 2 , 1 , … is

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  19. Find: n th term of the G.P. sqrt(3),1/(sqrt(3)),1/(3sqrt(3)),

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  20. Which term of the progression 18 ,-12 ,8, i s(512)/(729)?

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