Mathematics - Binomial Theorem Question with Solution | TestHub

MathematicsBinomial TheoremMultinomial theoremMedium2 minQB

MathematicsMediumsingle choice

If the sum of the coefficients in the expansion $(x - 2 y + 3 z)^{n}$ is 128, then the greatest coefficient in $(1 + x)^{n}$ is

Answer:

Solution:

Put $x = y = z = 1$ then $2^{n} = 128, n = 7,^{7} C_{3} = \frac{7.6.5}{1.2.3} = 35$

Stream:JEESubject:MathematicsTopic:Binomial TheoremSubtopic:Multinomial theorem

⏱ 2mℹ️ Source: QB

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