The sum of the binomial coefficients of ...

The sum of the binomial coefficients of `[2x+1/x]^n` is equal to `256.` The constant term in the expansion is: (A) 1120 (B) 2110 (C) 1210 (D) none

A

1120

B

2110

C

1210

D

2210

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The correct Answer is:

A

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