

MCQOPTIONS
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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. \[b={{a}^{3}}\] | |