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In a geometric progression consisting of...

In a geometric progression consisting of positive terms, each term equals the sum of the next two terms. Then the common ratio of this progression equals `:`

A

`sin 18^(circ)`

B

`2 cos 18^(circ)`

C

`2 cos 18^(circ)`

D

`2 sin 18^(circ)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • In a G.P. of even number of terms, the sum of all terms in 5 times the sum of the odd terms. The common ratio of the G.P. is :

    A
    `- ( 4)/( 5)`
    B
    `( 1)/( 5)`
    C
    4
    D
    None of these

  • Sum of infinite numbers of terms is 20 and sum of their squares is 100. The common ratio of G.P. is :

    A
    5
    B
    `(3)/( 5)`
    C
    `(8)/( 5)`
    D
    `(1)/(5)`

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    In an arithmetic progression of 50 terms, the sum of first ten terms is 210 and the sum of last fifteen terms is 2565. Find the arithmetic progression.

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