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If the sum of the coefficients in the ex...

If the sum of the coefficients in the expansion of `(1-3x+ 10x^(2))^(n)` is a and if the sum of the coefficients in the expansion of `(1+ x^(2))^(n)` is b, then
a. `a=3b`
b. `a=b^3`
c. `b=a^3`
d. none of these

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