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The numbers 3^(2 sin 20 -1 ) , 14, 3^(4 ...

The numbers `3^(2 sin 20 -1 ) , 14, 3^(4 - 2 sin 20) ` form first three terms of an A.P . Its fifth term =

A

`-25`

B

`-12`

C

40

D

53

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-SEQUENCES AND SERIES -EXERCISE
  1. If S(n) danotes the sum of n terms of n terms of an A.P. then S(n + 3)...

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  2. The first term of an A.P of consecutive integers is p^(2) + 1 . The su...

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  3. The numbers 3^(2 sin 20 -1 ) , 14, 3^(4 - 2 sin 20) form first three ...

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  4. Arithmetic mean of 1/2 & 1/3 is

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  5. One of the four A,M's between 3, 23 is

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  6. Sum of 4 Arithmetic means between 3 and 23 is

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  7. Sum of 14 A.M's between 5 and 8 is

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  8. If n arithmetic means are inserted between 2 and 38 , then the sum of ...

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  9. If 1, log(y) x, log(z) y , - 15 log(x) z are in A.P ., then

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  10. If the common difference of an A.P is 1 and 6th term is (4 cos^(2) alp...

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  11. If S(1), S(2),S(3), are the sums of first n natural numbers their squ...

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  12. Sum of n terms of (1)/(1.2) + (1)/(2.3) + (1)/(3.4) + …. is

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  13. Sum of the series S = 1 + (1)/(2)(1 + 2) + (1)/(3) ( 1 + 2 + 3 ) + (1)...

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  14. If 1^(2)+2^(2)+3^(2)+…..+2003^(2)=(2003)(4007)(334)and(1)(2003)+(2)(20...

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  15. The value of the expression ( 1 + (1)/(omega)) ( 1 + (1)/(omega^(2)...

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  16. If 2nd term of a G.p. is 24 and 5th terms is 81 then the first term is

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  17. If 6th term of a G.P is -1/32 and 9th term is 1/1256, then 11th term =

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  18. Which term of 0.004 + 0.02 + 0.1 + ….. Is 12.5 ?

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  19. Which term of the series 1,2,4,8,……… is 256?

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  20. Sum of 20 terms of 3 + 6 + 12 + …. Is

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