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If three positive real numbers a, b, c a...

If three positive real numbers `a, b, c` are in A.P and `abc = 4`, then the minimum possible value of `b` is

A

`2^(3/2)`

B

`2^(2/3)`

C

`2^(1/3)`

D

`2^(5/2)`

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The correct Answer is:
B
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NEW JOYTHI PUBLICATION-SEQUENCES AND SERIES -EXERCISE
  1. The sum of the series 1^(2) + 3^(2) + 5^(2) + ......+n'

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  2. The sum of 10 terms of the series sqrt(2) + sqrt(6) + sqrt(18) + .... ...

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  3. If three positive real numbers a, b, c are in A.P and abc = 4, then th...

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  4. Sum to infininty of the series 1 + 4/5 + 7/5^(2) + 10/5^(3) + ...... i...

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  5. The sum of the series 2, 5, 8, 11, …… is 60100, then n is

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  6. Let a(n) be the n^(th) term of a G.P of positive integers. Let sum(n =...

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  7. cos x = b for what b do the roots of the equation form an A.P?

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  8. Sum of all terms in in G.P is 5 times the sum of odd terms. The common...

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  9. Sum of n terms of the serise sqrt(2) + sqrt(8) + sqrt(18) + sqrt(32) +...

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  10. The sum of series 1 + 2x + 3x^(2) + 4x^(3) + ...... up to infinity whe...

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  11. If log(3)^(2),log(3)(2^(x) - 5) and log(2^(x) - 7/2)are in A.P then th...

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  12. If the sum of first n positive integers is 1/5 times the sum of their ...

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  13. The second term of an A.P is (x - y) and fifth term is (x + y), then t...

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  14. Three numbers are in G.P. if we double the middle term, we get an A.P....

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  15. Three non zero numbers a, b, c are in A.P. Increasing a by 1 or increa...

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  16. If x gt 0 then the sum of the series e^(-x) - e^(-2x) + e^(-3x) .........

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  17. The sum of the series 0.4 + 0.004 + 0.00004 + infty is

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  18. If (1.05)^(50) = 11.658 then sum (n = 1) ^(49) (1.05)^(n) equals

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  19. The product of n positive numbers is 1, then their sum is a positive i...

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  20. If x, y, z are in A.P then e^(-x),e^(-y)and e^(-z) are

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