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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
The coefficient of $x^2y^3z^2$ in the expansion of $(x+y+z)^7$ is
Solution
In $(x+y+z)^7$, the general coefficient of $x^ay^bz^c$ is $\frac{7!}{a!b!c!}$ Here, $a=2,\ b=3,\ c=2$ So, coefficient is $\frac{7!}{2!3!2!}$ $=C(7,2)\times C(5,3)$Online Test Series, Information About Examination,
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