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Let a and b be the coefficient of x^(3) ...

Let a and b be the coefficient of `x^(3)` in `(1+x+2x^(2) + 3x^(3))^(4)` and `(1+x+2x^(2) + 3x^(3) + 4x^(4))^(4)`, respectively. Then the value of `4a//b` is `"____"`.

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CENGAGE PUBLICATION-BINOMIAL THEOREM-All Questions
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