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If for a G.P., a=8 and t(4)=64 then : r ...

If for a G.P., a=8 and `t_(4)`=64 then : r =

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • If for a G.P., r=2 and t_(9) =128, then : a=

    A
    `(1)/(2)`
    B
    2
    C
    `(1)/(3)`
    D
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    C
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    D
    18

  • If for a G.P., S_(2) =8 and S_(4) =80 , then : (a,r) -=

    A
    (2,4)
    B
    (2,3)
    C
    (3,4)
    D
    none of these

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