Subsets and Power Set

In interval notation$(a,b)=x|a<x<b,(a,b)$represents

If $\mathrm{A}=\{1, 2, 3, 4, 5, 6, 7\}$, then the number of proper subsets of $\mathrm{A}$ is

Find the length of interval $\left(5,16\right)$.

Find the length of interval $\left(3,21\right)$.

Write a superset of the following set.

$A=\left\{7,8\right\}$

Write a superset of the following set.

$A=\left\{6,7,8\right\}$

Write a superset of the following set.

$A=\left\{2,3\right\}$

Write a superset of the following set.

$A=\left\{2,3,4\right\}$

Write a superset of the following set.

$A=\left\{2,3,4,5\right\}$

If $A=${$x|x$ is a prime number, $0\le x\le 9$}, then the number of elements of power set of $A$ is

If $A=\left\{x,y,z\right\}, B=\left\{1,2\right\}$, then the total number of relations from set $A$ to set $B$ are

The length of an interval $(-18,-24]$ is 

The length of an interval $\left(14,18\right)$ is 

Which of the following is the power set of $A=\left\{1,2,3\right\}$ 

Write the following subset of $\mathrm{R}$ as interval:

$\left\{x: x\in \mathrm{R}, 3\le x\le 4\right\}$

Write the following subset of $\mathrm{R}$ as interval:

$\{x:x\in \mathrm{R},-12<x<-10\}$

If $\mathrm{A}=\left\{a,b,c\right\}$ which of he following is the power set of $A$

Express the following set as an interval:

$F=\{x:x\in R,-2\le x<0\}$

Express the following set as an interval:

$D=\{x:x\in R,-5\le x\le 2\}$

Express the following set as an interval:

$C=\{x:x\in R, 2<x\le 6\}$