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If the last term is 994,the sum of the A...

If the last term is 994,the sum of the A.P series whose first term is a is 70,336.If the number of terms is 128. Find a.

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KALYANI PUBLICATION-ARITHMATIC PROGRESSION-EXERCISE
  1. Find the sum (1-1/n)+(1-2/n)+(1-3/n)+........upto n terms.

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  2. If a1=104,a24=196,find C.D.(=d) and sum upto 24th term(=S24)

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  3. If the last term is 994,the sum of the A.P series whose first term is ...

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  4. Find the number of terms of the A.P. 63,60,57......so that their sum i...

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  5. Find the number of terms of A.P. 64,60,56.....so that their sum is 544...

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  6. How many terms of the A.P. 9,17,25.....must be taken so that their sum...

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  7. Find the sum of all the natural number less than 100 which divisible b...

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  8. Find the sum of all three digit natural number which is divisible by 1...

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  9. In an A.P.,the sum of first n terms is 3n^2/2+5n/2.Find its 25th term...

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  10. In an A.P.,the sum of first n terms is 5n^2/2+3n/2.Find its 20th term...

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  11. Find the sum of all three digit numbers which leave the remainder 3 wh...

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  12. Find the sum of all two digit natural numbers which when divided by 3 ...

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  13. Find the sum of all two digit numbers greater than 50 which when divid...

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  14. If the sum of first n,2n,3n terms of an A.P. be S1,S2 and S3 respectiv...

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  15. If the sum of first n,2n,3n terms of an A.P. be S1,S2 and S3 respectiv...

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  16. A sum of ₹700 is to be used to given seven cash prizes to students of ...

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  17. A contract on construction job specifies a penalty for delay of comple...

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  18. 40 coins are placed in a straight line on a ground.The distance betwee...

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  19. For the A.P.3/2, 1/2, -1/2,-3/2write the first term and common differe...

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  20. Find K if 10,K,-2 are in A.P.

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