1.

Answer the following: If 6th term in the expansion of (x+*)^n is equal to "^nC_5x^(n-10) find *.

Answer»

Solution :Let 6th TERM of `(x+y)^N` is `^nC_5x^(n-10)`
` THEREFORE "^nC_5x6(n-5)y^5 = ^nC_5x^(n-10) = ^nC_5x(n-5).x^-5`
`y^5 = x^-5 = 1/x^5`
`therefore y = 1/x`. HENCE = 1/x


Discussion

No Comment Found

Related InterviewSolutions