1.

If the sum of the coefficients in the expansion of \[{{(1-3x+10{{x}^{2}})}^{n}}\] is a and if the sum of the coefficients in the expansion of\[{{(1+{{x}^{2}})}^{n}}\] is b, then [UPSEAT 2001]

A. \[a=3b\]
B. \[a={{b}^{3}}\]
C. \[b={{a}^{3}}\]
D. None of these
Answer» C. \[b={{a}^{3}}\]


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