The sum, of the coefficients of the first 50 terms in the binomial expansion of $( 1 - x ) ^ { 100 }$, is equal to
(1) ${ } ^ { 101 } C _ { 50 }$
(2) ${ } ^ { 99 } C _ { 49 }$
(3) $- { } ^ { 101 } C _ { 50 }$
(4) $- { } ^ { 99 } C _ { 49 }$

Let $K$ be the sum of the coefficients of the odd powers of $x$ in the expansion of $( 1 + x ) ^ { 99 }$. Let a be the middle term in the expansion of $\left( 2 + \frac { 1 } { \sqrt { 2 } } \right) ^ { 200 }$. If $\frac { { } ^ { 200 } C _ { 99 } K } { a } = \frac { 2 ^ { l } m } { n }$, where $m$ and $n$ are odd numbers, then the ordered pair $( l , \mathrm { n } )$ is equal to: (1) $( 50,51 )$ (2) $( 51,99 )$ (3) $( 50,101 )$ (4) $( 51,101 )$

Let $[ t ]$ denote the greatest integer $\leq t$. If the constant term in the expansion of $\left( 3 x ^ { 2 } - \frac { 1 } { 2 x ^ { 5 } } \right) ^ { 7 }$ is $\alpha$ then $[ \alpha ]$ is equal to $\_\_\_\_$

Let $\alpha > 0$ be the smallest number such that the expansion of $\left(x^{\frac{2}{3}} + \frac{2}{x^3}\right)^{30}$ has a term $\beta x^{-\alpha}$, $\beta \in \mathbb{N}$. Then $\alpha$ is equal to $\underline{\hspace{1cm}}$.

The sum of all those terms, of the arithmetic progression $3, 8, 13, \ldots, 373$, which are not divisible by 3, is equal to $\_\_\_\_$.

Let $0 \leq \mathrm { r } \leq \mathrm { n }$. If ${ } ^ { \mathrm { n } + 1 } \mathrm { C } _ { \mathrm { r } + 1 } : { } ^ { n } \mathrm { C } _ { \mathrm { r } } : { } ^ { \mathrm { n } - 1 } \mathrm { C } _ { \mathrm { r } - 1 } = 55 : 35 : 21$, then $2 \mathrm { n } + 5 \mathrm { r }$ is equal to:
(1) 50
(2) 62
(3) 55
(4) 60

If $A$ denotes the sum of all the coefficients in the expansion of $\left( 1 - 3 x + 10 x ^ { 2 } \right) ^ { n }$ and $B$ denotes the sum of all the coefficients in the expansion of $\left( 1 + x ^ { 2 } \right) ^ { n }$, then:
(1) $\mathrm { A } = \mathrm { B } ^ { 3 }$
(2) $3 \mathrm {~A} = \mathrm { B }$
(3) $\mathrm { B } = \mathrm { A } ^ { 3 }$
(4) $\mathrm { A } = 3 \mathrm {~B}$

Let $m$ and $n$ be the coefficients of seventh and thirteenth terms respectively in the expansion of $\left(\frac{1}{3}x^{\frac{1}{3}} + \frac{1}{2x^{\frac{2}{3}}}\right)^{18}$. Then $\left(\frac{n}{m}\right)^{\frac{1}{3}}$ is:
(1) $\frac{4}{9}$
(2) $\frac{1}{9}$
(3) $\frac{1}{4}$
(4) $\frac{1}{4}$

If the coefficients of $x ^ { 4 } , x ^ { 5 }$ and $x ^ { 6 }$ in the expansion of $( 1 + x ) ^ { n }$ are in the arithmetic progression, then the maximum value of $n$ is:
(1) 7
(2) 21
(3) 28
(4) 14

If the constant term in the expansion of $\left( \frac { \sqrt [ 5 ] { 3 } } { x } + \frac { 2 x } { \sqrt [ 3 ] { 5 } } \right) ^ { 12 } , x \neq 0$, is $\alpha \times 2 ^ { 8 } \times \sqrt [ 5 ] { 3 }$, then $25 \alpha$ is equal to :
(1) 724
(2) 742
(3) 639
(4) 693

If the term independent of $x$ in the expansion of $\left( \sqrt { \mathrm { a } } x ^ { 2 } + \frac { 1 } { 2 x ^ { 3 } } \right) ^ { 10 }$ is 105 , then $\mathrm { a } ^ { 2 }$ is equal to : (1) 2 (2) 4 (3) 6 (4) 9

If for some $m, n$; ${}^{6}C_m + 2\,{}^{6}C_{m+1} + {}^{6}C_{m+2} > {}^{8}C_3$ and ${}^{n-1}P_3 : {}^{n}P_4 = 1 : 8$, then ${}^{n}P_{m+1} + {}^{n+1}C_m$ is equal to
(1) 380
(2) 376
(3) 384
(4) 372

Let $a$ be the sum of all coefficients in the expansion of $\left( 1 - 2 x + 2 x ^ { 2 } \right) ^ { 2023 } \left( 3 - 4 x ^ { 2 } + 2 x ^ { 3 } \right) ^ { 2024 }$ and $b = \lim _ { x \rightarrow 0 } \frac { \int _ { 0 } ^ { x } \frac { \log ( 1 + t ) } { t ^ { 2024 } + 1 } dt } { x ^ { 2 } }$. If the equations $c x ^ { 2 } + d x + e = 0$ and $2 b x ^ { 2 } + a x + 4 = 0$ have a common root, where $c , d , e \in R$, then $d : c : e$ equals
(1) $2 : 1 : 4$
(2) $4 : 1 : 4$
(3) $1 : 2 : 4$
(4) $1 : 1 : 4$

The coefficient of $x ^ { 2012 }$ in the expansion of $1 - x ^ { 2008 } 1 + x + x ^ { 2007 }$ is equal to $\_\_\_\_$ .

If $\frac { { } ^ { 11 } C _ { 1 } } { 2 } + \frac { { } ^ { 11 } C _ { 2 } } { 3 } + \ldots . . + \frac { { } ^ { 11 } C _ { 9 } } { 10 } = \frac { n } { m }$ with $\operatorname { gcd } ( n , m ) = 1$, then $n + m$ is equal to

Let $\alpha = \sum _ { r = 0 } ^ { n } \left( 4 r ^ { 2 } + 2 r + 1 \right) ^ { n } C _ { r }$ and $\beta = \left( \sum _ { r = 0 } ^ { n } \frac { { } ^ { n } C _ { r } } { r + 1 } \right) + \frac { 1 } { n + 1 }$. If $140 < \frac { 2 \alpha } { \beta } < 281$, then the value of $n$ is $\_\_\_\_$

Let $\alpha , \beta , \gamma$ and $\delta$ be the coefficients of $x ^ { 7 } , x ^ { 5 } , x ^ { 3 }$ and $x$ respectively in the expansion of $\left( x + \sqrt { x ^ { 3 } - 1 } \right) ^ { 5 } + \left( x - \sqrt { x ^ { 3 } - 1 } \right) ^ { 5 } , x > 1$. If u and v satisfy the equations $\begin{aligned} & \alpha u + \beta v = 18 \\ & \gamma u + \delta v = 20 \end{aligned}$ then $u + v$ equals :
(1) 5
(2) 3
(3) 4
(4) 8

Let the coefficients of three consecutive terms $T _ { r } , T _ { r + 1 }$ and $T _ { r + 2 }$ in the binomial expansion of $( a + b ) ^ { 12 }$ be in a G.P. and let $p$ be the number of all possible values of $r$. Let $q$ be the sum of all rational terms in the binomial expansion of $( \sqrt [ 4 ] { 3 } + \sqrt [ 3 ] { 4 } ) ^ { 12 }$. Then $\mathrm { p } + \mathrm { q }$ is equal to :
(1) 283
(2) 287
(3) 295
(4) 299

For some $n \neq 10$, let the coefficients of the 5th, 6th and 7th terms in the binomial expansion of $(1+x)^{n+4}$ be in A.P. Then the largest coefficient in the expansion of $(1+x)^{n+4}$ is:
(1) 20
(2) 10
(3) 35
(4) 70

Suppose A and B are the coefficients of $30^{\text{th}}$ and $12^{\text{th}}$ terms respectively in the binomial expansion of $(1 + x)^{2\mathrm{n}-1}$. If $2\mathrm{A} = 5\mathrm{B}$, then n is equal to:
(1) 22
(2) 20
(3) 21
(4) 19

The least value of $n$ for which the number of integral terms in the Binomial expansion of $(\sqrt[3]{7} + \sqrt[12]{11})^n$ is 183, is:
(1) 2184
(2) 2196
(3) 2148
(4) 2172

If $\sum _ { r = 1 } ^ { 30 } \frac { r ^ { 2 } \left( { } ^ { 30 } C _ { r } \right) ^ { 2 } } { { } ^ { 30 } C _ { r - 1 } } = \alpha \times 2 ^ { 29 }$, then $\alpha$ is equal to $\_\_\_\_$

If $\sum _ { r = 0 } ^ { 5 } \frac { { } ^ { 11 } C _ { 2r } } { 2 r + 2 } = \frac { \mathrm { m } } { \mathrm { n } } , \operatorname { gcd } ( \mathrm { m } , \mathrm { n } ) = 1$, then $\mathrm { m } - \mathrm { n }$ is equal to $\_\_\_\_$

If $\alpha = 1 + \sum _ { r = 1 } ^ { 6 } ( - 3 ) ^ { r - 1 } \quad { } ^ { 12 } \mathrm { C } _ { 2 r - 1 }$, then the distance of the point $( 12 , \sqrt { 3 } )$ from the line $\alpha x - \sqrt { 3 } y + 1 = 0$ is $\_\_\_\_$.

The sum of all rational terms in the expansion of $\left( 1 + 2 ^ { 1 / 2 } + 3 ^ { 1 / 2 } \right) ^ { 6 }$ is equal to