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Unattributed TMUA Mock Set A Paper 1 · Q2

Paper 1Algebra

Let a>0a>0.

The sum of all binomial coefficients in the expansion of (2x−ax)n\left(2x-\dfrac a{\sqrt{x}}\right)^n is 64, and the constant term in the expansion is 60. What is the value of aa?

A22
B11
C−1-1
D44
E−4-4

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