Power Set of a Set

Q. Two finite sets have m and n elements respectively. The total number of subsets of first set is 56 more than the total number of subsets of the second set. The values of m and n respectively are.

1. 7, 6
2. 5, 1
3. 6, 3
4. 8, 7

Q. Let set $R=\{P:B\subseteq P\subseteq A\}$
If $A=\{1,2,3,4,5\}$ and $B=\{1,2\}$, then number of elements in set $R$ is

1. $2$
2. $4$
3. $8$
4. $16$

Q. The elements of power set of Set $A=\{-1,0,1\}$ are

1. $\left\{1\right\},\left\{0\right\},\left\{1\right\},\{-1,0\},\{0,1\},\{-1,1\},\{-1,0,1\}$
2. $\{-1,0\},\{0,1\},\{-1,1\},\varphi ,\{-1,0,1\}$
3. $\left\{1\right\},\left\{0\right\},\left\{1\right\},\{-1,0\},\{0,1\},\{-1,1\},\varphi ,\{-1,0,1\}$
4. $\left\{1\right\},\left\{0\right\},\left\{1\right\},\{-1,0\},\{0,1\},\{-1,1\},\varphi$

Q. For a set $X=\{2,3,\{2,3\left\}\right\},P\left(X\right)=$

1. $\left\{\right\{2\},\{3\},\{\{2,3\}\left\}\right\}$
2. $\{\varnothing ,\{2\},\{3\},\{\{2,3\}\left\}\right\}$
3. $\{\varnothing ,\{2\},\{3\},\{\{2,3\}\},\{2,\{2,3\}\},\{3,\{2,3\}\left\}\right\}$
4. $\{\varnothing ,\{2\},\{3\},\{\{2,3\}\},\{2,\{2,3\}\},\{3,\{2,3\}\},\{2,3,\{2,3\}\left\}\right\}$

Q. The power set of $C=\left\{\varphi \right\}$ is

1. $\left\{\varphi \right\}$
2. $\{\varphi ,\{\varphi \left\}\right\}$
3. $\left\{\right\{\varphi \left\}\right\}$
4. $\left\{0\right\}$