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The greatest terms of the expansion (2x+...

The greatest terms of the expansion `(2x+5y)^(13)`
when `x=10, y=2` is

A

`.^(13)C_(5).20^(8).10^(5)`

B

`.^(13)C_(6).20^(7).10^(4)`

C

`.^(13)C_(4).20^(9).10^(4)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The greatest term in the expansion of (3 + 5x)^(15) , when x=1/5, is

    A
    `""^(15)C_(3)(3^(13))`
    B
    `""^(15)C_(4)(3^(12))`
    C
    `""^(15)C_(4)(3^(10))`
    D
    none of these

  • The greatest term in the expansion of (3+5x)^(15) , when x=(1)/(5) , is

    A
    `""^(15)C_(3)`
    B
    `""^(15)C_(4).3^(11)`
    C
    `""^(15)C_(10).3^(10)`
    D
    `""^(15)C_(3).3^(13)`

  • The greatest term in the expansion of (3+2x)^(51) , where x=(1)/(5) , is

    A
    `5^(th)` term
    B
    `6^(th)` term
    C
    `7^(th)` term
    D
    `9^(th)` term

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