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If the middle term in (a+b)^(10) " is " ...

If the middle term in `(a+b)^(10) " is " T_(r-1)` then r = `……`

A

6

B

5

C

7

D

8

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If the middle term of (1/x +x in x )^(10) is equal to 7 . 7/8 , then the value of x is .

    A
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    B
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    C
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  • The middle term in the expansion (x^(2)-1/(2x))^(20) is r than (r+3)^(th) term is ………

    A
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    B
    `20C_(12)x^(2)2^(-12)`
    C
    `-20C_(7)x.2^(-13)`
    D
    None of these

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