Question 21 MarkThe total number of terms in the expansion of $(1+6 x$ $\left.+9 x^2\right)^{23}$ is 47AnswerTrueView full question & answer→
Question 31 MarkThe number of terms in the expansion of $\left[(x-2 y)^3\right]^3$ is 9 .AnswerFalseView full question & answer→
Question 41 MarkThe value of $\frac{ C _0}{6}-{ }^8 C _1+{ }^8 C _2 \cdot 6-{ }^8 C _3 \cdot 6^2+\ldots +{ }^8 C _8 \cdot 6^7$ is $\frac{5^8}{6}$.AnswerTrueView full question & answer→
Question 61 MarkThe coefficient of $\frac{1}{x}$ in the expansion of $(1+x)^n\left(1+\frac{1}{x}\right)^n$ is AnswerTrueView full question & answer→
Question 71 MarkThe total number of terms in the expansion of $(x+$ a) ${ }^{100}+(x-a)^{100}$ is 50.AnswerFalseView full question & answer→