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If the 10^(th)term of G.P is 9 and 4^(th...

If the `10^(th)`term of G.P is 9 and `4^(th)`term is 4 then its `7^(th)`term is

A

6

B

36

C

`4/9`

D

`9/4`

Text Solution

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The correct Answer is:
A
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NEW JOYTHI PUBLICATION-SEQUENCES AND SERIES -EXERCISE
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  3. The second term of an A.P is (x - y) and fifth term is (x + y), then t...

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

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

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

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  11. If the sum of the first n terms of a series be 5n^(2) + 2n, then its s...

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  12. If the sum of the first n terms of a series be 5n^(2) + 2n, then its s...

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  13. If A.M and G.M of the roots of a quadratic equation in x are p and q r...

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  14. If the 10^(th)term of G.P is 9 and 4^(th)term is 4 then its 7^(th)term...

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  15. If x gt 1, y gt 1, z gt 1 are in G.P then 1/(1 + log x),1/(1 + log y),...

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  17. If the 7^(th) term of n A.P is 40. Then the sum of its first 13 terms ...

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  18. An infinite G.P has first 13 term as a and sum 5 , then

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  20. Three numbers from an increasing G.P. If the middle term is doubled th...

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