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(i) Find the sum of first 200 even natur...

(i) Find the sum of first 200 even natural numbers.
(ii) Find the sum of all numbers lying between 201 and 424 which are divisible by 5.
(iii) Find the sum of all numbers from 1 to 200 which are divisible by either 2 or 3.

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The correct Answer is:
(i)40200 (ii) 13750 (iii) 13367
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NAGEEN PRAKASHAN-ARITHMETIC PROGRESSION-Exercise 5c
  1. How many terms of the A.P. 54, 51, 48, ... has the sum 513 ? Explain t...

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  2. Find the value of 'x' if (i) 1+6+11+...+x=189 (ii) 1+1+4+7+10+...+...

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  3. (i) Find the sum of first 200 even natural numbers. (ii) Find the su...

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  4. Find the sum of n terms of an A.P. whose nth term is (2n+1).

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  5. The sum of n terms of a series is n(n+1) . Prove that it is an A.P. al...

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  6. The sum of n terms of a series is (3n^(2)+2n). Prove that it is an A.P...

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  7. The sum of first 5 terms and first 15 terms of an A.P. are equal. Fin...

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  8. The sum of first 8 terms and first 24 terms of an A.P. are equal. Find...

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  9. The sum of15 terms of an A.P. is zero and its 4th term is 12. Find its...

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  10. The sum of first 8 terms of an A.P. is 64 and that of first 15 terms i...

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  11. Find the sum of first 24 terms of the A.P. a1, a2, a3, , if it is kno...

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  12. The first term, last term and common difference of an A.P. are respect...

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  13. If S(n) denotes the sum of first n terms of an AP, then prove that S(1...

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  14. Yasmeen saves Rs. 32 during the first month, Rs. 36 in the second mont...

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  15. The sum of the first five terms of an A.P. and the sum of the first s...

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  16. 200 logs are stacked in such a way that there are 20 logs in the botto...

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  17. The ratio of the sum of n terms of two A.P. s is (7n+1):(4n+27) . Fin...

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

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  19. The famous mathematician associated with finding the sum of the first ...

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  20. If S1 is the sum of an AP of 'n' odd number of terms and S2 be the sum...

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