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The 'n' th term of an A.P. is a(n)=3+2n ...

The 'n' th term of an A.P. is `a_(n)=3+2n` then the common difference is ………..

A

2

B

3

C

4

D

5

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A
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VGS PUBLICATION-BRILLIANT-PROGRESSIONS-Part - B Observation bits to solve various bits (Given in the public examination)
  1. In the formula of n^(th) term of term of a Geometric Progression a(n)=...

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  2. In the formula of n^(th) term of term of a Geometric Progression a(n)=...

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  3. The 'n' th term of an A.P. is a(n)=3+2n then the common difference is ...

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  4. The common difference of the AP x-y, x, x+y is ……….

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  5. The common difference of the AP 2a-b, 4a-3b, 6a-5b is ………..

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  6. In a GP a(1) = 20 and a(4) = 540 then r = …………..

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  7. Formula for sum of 'n' terms in an AP = …………..

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  8. The common difference of AP 1, -1, -3, ……. Is …………

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  9. In an AP a(n) = (5n-3)/(4), then a(7) = ………..

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  10. Which term of G.P. 3, 3sqrt(3), 9, ……. equals to 243?

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  11. If x, x+2, x+6 are three consecutive terms in G.P. find the value of '...

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  12. If a(n) = (n(n+3))/(n+2), then find a(17).

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  13. The 21^(th) of an A.P., whose first two terms are -3 and 4 is ………..

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  14. The common difference of an A.P. for which a(18)-a(14) = 32 is …….

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  15. In an A.P., if a = 1 , a(n) = 20 and S(n) = 399, then n = ……..

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  16. Which term of the G.P. 1/3, 1/9, 1/27,………. is 1/(2187)?

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  17. Which term of A.P., 18,15,12,……. Equal to '0' ?

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  18. If k, 2k+1, 2k+3 are three consecutive terms in A.P., then find the va...

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  19. If a(n) = (n)/(n+1), then a(2017) = ………..

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  20. n^(th) term of a progression a, ar ar^(2), ………. is …………

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