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If the sum of first 7 terms of an A.P. i...

If the sum of first 7 terms of an A.P. is 49 and that of its 17 terms is 289, find the sum of first n terms of the A.P.

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`n^(2)`
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If the sum of first 7 terms of an A.P. is 49 and that of 17 terms is 289, find the sum of first n terms.

If the sum of first 7 terms of an A.P is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P

If the sum of first 7 terms of an AP is 49 and that of 17 terms is 289, find the sum of first n terms.

If the sum of 7 terms of an A.P.is 49 and that of 17 terms is 289, find the sum of n terms.

The sum of first 8 terms of an A.P. is 64 and that of first 15 terms is 225. Find the sum of its first 17 terms.

If the sum of the first 9 terms of an A.P. is 81 and that of the first 18 terms is 324, find the sum of its first n terms.

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If the sum of first 10 terms of an A.P is 60 and sum of first 15 terms is -165 then find the sum of its n terms

The sum of 8 terms of an A.P. is -64 and sum of 17 terms is 289. Find the sum of its 'n' terms.

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EDUCART PUBLICATION-ARITHMETIC PROGRESSIONS-SHORT ANSWER (SA - II) TYPE QUESTIONS
  1. Find the sum of the first 40 positive integers divisible by 6.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  17. Which term of the sequence 20 ,\ \ 19 1/4,\ \ 18 1/2,\ \ 17 3/4,\ d...

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  18. Find the middle term of th e A.P. 7, 13, 19, … 247.

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  19. Split 207 into three parts such that these are in AP and the product o...

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  20. How many numbers lie between 10 and 300, which divided by 4 leave a re...

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