(a^m)^n=a^mn and a^0 = 1

Q. Match the following columns using multiplication rule of exponent.

1. $5^{-7}$
2. $7^{-2}$
3. $3^6$

Q. Which of the following is not equal to $(3^2{)}^3$?

1. $(3^3{)}^2$
2. $3^9$
3. $3^6$
4. $3^3\times 3^3$

Q.

What is the value of ${\left(\right(2{)}^{-1})}^{-2}$ ?

__

Q. Simplify:
${(-4)}^3$

Q.

The exponent of $c$ after simplifying $\left(3ab{)}^2\right(-5a^{2}b{c}^4{)}^2$ is

___