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find the sum of n terms of the series (4...

find the sum of `n` terms of the series `(4-1/n)+(4-2/n)+(4-3/n)+...........`

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The correct Answer is:
`(7n - 1)/(2)`
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EDUCART PUBLICATION-ARITHMETIC PROGRESSIONS-SHORT ANSWER (SA - II) TYPE QUESTIONS
  1. The sum of the first n terms of an AP whose first term is 8 and the co...

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  2. If the m^(th) term of an A.P. is 1/n and the n^(th) term is 1/m, show ...

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  3. find the sum of n terms of the series (4-1/n)+(4-2/n)+(4-3/n)+...........

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  4. For what value of n, the nth terms of the arithmetic progressions 63, ...

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

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  6. Divide 56 in four parts in A.P. such that the ratio of the product of ...

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

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  8. If the sum of first m terms of an A.P. is the same as the sum of its f...

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

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  10. The houses of a row are numbered from 1 to 49. Show that there is a va...

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  11. The 14th term of an A.P. is twice its 8th term. If its 6th term is -8,...

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  12. The digits of a positive integer, having three digits, are in A.P. and...

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  13. Find the sum of first 24 terms of the list of numbers whose nth term ...

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  14. Determine the AP whose third term is 16 and the 7th term exceeds the 5...

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  15. Justify whether it is true to say that the following are the nth terms...

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  16. Justify whether it is true to say that the following are the nth terms...

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  17. Justify whether it is true to say that the following are the nth terms...

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  18. Find a, b and c such that the following numbers are in AP, a, 7, b, 23...

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  19. Determine the AP whose fifth term is 19 and the difference of the eigh...

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  20. The sum of the first 30 terms of an A.P. is 1920. if the fourth term i...

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