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The sum of some terms of G. P. is 315...

The sum of some terms of G. P. is 315 whose first term and the common ratio are 5 and 2, respectively. Find the last term and the number of terms.

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Knowledge Check

  • Find the first term of a G.P., whose 8^(th) term is 192 and common ratio is 2.

    A
    `3/2`
    B
    `2/3`
    C
    `3`
    D
    `2`

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