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The coefficient of the 7th term in the binomial expansion of...

The coefficient of the 7th term in the binomial expansion of (2x3)10 in ascending powers of x is

A.

560243

B.

841243

C.

1120243

D.

4481243

Correct answer is C

10C71(2106)(13)6

10!(106)!6!×16×1243

= 210×16×1729

= 1120243