1.

If (1 + x - 3x^(2))^(10) = a_(0) + a_(1)x + a_(2)x^(2) + ....... + a_(20)x^(20), then a_(2) + a_(4) + a_(6)+ ……. + a_(20) =

Answer»

`(B^(N) - a^(n))/(b - a)`
`(a^(n) - b^(n))/(b - a)`
`(a^(n + 1) - b^(n + 1))/(b - a)`
`(b^(n + 1) - a^(n + 1))/(b - a)`

ANSWER :D


Discussion

No Comment Found

Related InterviewSolutions