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If 4, x, 9 are in G.P. , then x =...

If `4, x, 9 are in G.P. , then x =

A

7

B

6

C

8

D

5

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VGS PUBLICATION-BRILLIANT-PROGRESSIONS-EXERCISE
  1. If a(7) + a(4) of a G.P. is 343, then the common ratio is

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  2. If a, b, c are in G.P., then b =

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  3. If 4, x, 9 are in G.P. , then x =

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  4. If 3, x, 11 are in A.P. , then x =

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  5. If x, xy , xy^(2), xy^(3), …………. Forms a G.P., then its 15^(th) term i...

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  6. if a = 3 and a(7) = 33, then a(11) is

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  7. -20, -18, -16, ………… which term of this A.P. is a first positive term?

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  8. 1,-1, 1, -1,1,-1,…… up to 131 terms, then S(131) =

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  9. The 10^(th) term of the AP 3,11,19,…. Is ……….

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  10. ………. term of AP 21 , 18, 15, ……. is -81.

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  11. The 8th term from the end of the AP 7,10,13, ….. 184 is ………..

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  12. The nth term of a, a+d, a+2d, ……… is ………….

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  13. In the AP, first term is 4 and common difference is -1 then AP is ………....

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  14. The AP with first term is 8 and common difference 2 1/2 is ……………

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  15. In the AP -9 , -14, -19, -24, ……… a(30) - a(20) = ………….

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  16. The next term of the AP 51, 59 , 67 , 75 is ……………….

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

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  18. 15th term of the AP x-7, x-2 , x+3, ……… is ………….

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  19. The common ratio of the GP 4, 20, 100, 500, ……. Is ……….

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  20. The 16th term of 4, -4, 4, -4, ………. Is ………………

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