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In a GP, a(8) = 192, r=2 then a(12) = ……...

In a GP, `a_(8) = 192, r=2` then `a_(12)` = …………

A

3072

B

7032

C

1032

D

1100

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The correct Answer is:
A
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VGS PUBLICATION-BRILLIANT-PROGRESSIONS-Creative Bits for CCE Model Examination
  1. The sum of first 40 positive intergers divisible by 6 is …………

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  2. a(n) = 9-5n, a(4) = ………….

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  3. In a GP, a(8) = 192, r=2 then a(12) = …………

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  4. 2, -6, 18, -54, ………….r = ………….

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  5. 5/2, 5/4, 5/8, ………… a(n) = …………….

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  6. 1/(sqrt2), -2, 8/(sqrt2), …………..a(5) = …………….

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  7. 3, -3^(2), 3^(3), ……….a(6) = …………..

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  8. In a G.P. a = 81, r = -1/3, a(3) = ……….

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  9. In a G.P. 25, -5, 1, -1/5, ……..r = …….

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  10. S(n) in AP = ……………….

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  11. In AP a(12) = 37, d = 3, then a = …………..

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  12. For the following A.Ps, write the the common difference: (i) 2,6,10,1...

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  13. -1, 1/4, 3/2,…………. . Sum to 10 terms = ………….

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  14. Find the sums given below: (iii) -5+(-8)+(-11)+……+(-230)

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  15. Find the sum of : (i) The first 1000 positive intergers .

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  16. 16 + 11 + 6 + ……….23 terms = …….

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  17. Identify the number of 3 digit number that divisible by 7.

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  18. In an AP a(1) = -4, a(6)= 6 then a(2) = …….

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  19. For the following A.Ps, write the first term and the common difference...

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  20. In the formula a(n) = 3.6, a = - 18.9, d = 2.5, n = ……………

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