Question

If $\frac{- 2}{3}\left\lbrack 1 - \frac{x}{2} + \frac{x^{2}}{4} - \frac{x^{3}}{8} + ...... + ( - 1)^{n}\frac{x^{n}}{2^{n}} + ...... \right\rbrack$, then xyz is.

• A. 0
• B. 1
• C. 3
• D. None of these

Answer 1

Answer: (B)

1

Answer 2

We have $Q( - 1) = 6$

$Q(2) = 3$.