$\frac{2}{3}$

$\frac{3}{2}$

$-\frac{3}{2}$

$\frac{5}{2}$

$\left[0,+\infty \right]$

$\left[3,+\infty \right]$

$\left[-\infty ,0\right]$

$\left(0,3\right)$

2

2i

-2i

(-5,3)

(5,3)

(-5,-3)

(5,-3)

2,-3

-2,-3

2,3

-2,3

$\left(\begin{array}{cc}2& -1\\ 5& 3\end{array}\right)$

$\left(\begin{array}{cc}3& -1\\ -5& 2\end{array}\right)$

$\left(\begin{array}{cc}3& -1\\ -5& -2\end{array}\right)$

$\left(\begin{array}{cc}3& -1\\ 5& -2\end{array}\right)$

1

$\frac{2}{3}$

$\frac{1}{3}$

$\frac{3}{2}$

224

248

240

220

$1+\frac{x^2}{2!}+\frac{x^4}{4!}+.........$

$1-\frac{x^2}{2!}+\frac{x^4}{4!}+.........$

$1+\frac{x^3}{3!}+\frac{x^5}{5!}+.........$

$1-\frac{x^3}{3!}+\frac{x^5}{5!}+.........$

$\frac{n(n+1)}{2}$

$\frac{n^2(n+1)}{2}$

$\frac{n(n+1) (2n+1)}{6}$

${\left(\frac{n+1}{2}\right)}^2$

11

13

12

14

8

$\frac{4}{9}$

$\frac{3}{7}$

$\frac{7}{13}$

$a_1{b}_1+a_2{b}_2=0$

$a_2{b}_2+a_2{b}_2=0$

$a_2{a}_2+b_2{b}_2=0$

$a_2{a}_2-b_2{b}_2=0$

*(2,3) এবং 5

(3,2)এবং 5

(3,2) এবং 4

(2,3)এবং 4

$\frac{1}{2}$

$\frac{1}{\sqrt{2}}$

$\frac{1}{3}$

$\frac{1}{\sqrt{3}}$

$\frac{1}{\sqrt{21}}$

$\pm \frac{5}{\sqrt{21}}$

$\pm \frac{2}{\sqrt{21}}$

$\pm \frac{\sqrt{21}}{5}$

$\frac{\sqrt{3}}{2}$

$\frac{1}{\sqrt{2}}$

$\frac{1}{2}$

$\sqrt{3}$

$e^2$

$e^3$

e

কোনটি নয়

3

5

$\frac{15}{4}$

$\frac{11}{4}$

$\frac{\mathrm{\pi }}{2}$

$\frac{\mathrm{\pi }}{3}$

$\frac{\mathrm{\pi }}{4}$

$\frac{\mathrm{\pi }}{6}$

$\frac{1}{1-x^2}$

$\frac{1}{\sqrt{1-x^2}}$

$\frac{1}{1+x^2}$

$\frac{1}{\sqrt{1+x^2}}$

${\left(A\cap B\right)}^{\text{'}}=A\cup B^{\text{'}}$

${\left(A\cap B\right)}^{\text{'}}=A^{\text{'}}\cup B^{\text{'}}$

${\left(A\cup B\right)}^{\text{'}}=A^{\text{'}}\cap B^{\text{'}}$

${\left(A\cup B\right)}^{\text{'}}=A^{\text{'}}\cap B$

$\frac{2}{3}$

$\frac{3}{2}$

$\frac{1}{2}$

$\frac{1}{3}$

$\frac{3}{8}$

$\frac{1}{2}$

$\frac{1}{4}$

কোনটিই নয়।

$\frac{3}{11}$

$\frac{4}{11}$

$\frac{5}{11}$

$\frac{2}{11}$

x=2, y=1

x=3,y=1

x=1,y=3

x=2, y=-1

$\theta =n\pi \pm \frac{\mathrm{\pi }}{3}$

$\theta =2n\pi \pm \frac{\mathrm{\pi }}{6}$

$\theta =2n\pi \pm \frac{\mathrm{\pi }}{2}$

$\theta =2n\pi \pm \frac{\mathrm{\pi }}{3}$

115

69

110

কোনটিই নয়।

2

6

10

12