Count : To count means to find out the number of objects by adding one for every object.

Number : A number $x$ is a mathematical symbol representing a quantity.

Number : A number $x$ is a mathematical symbol representing a quantity.

Multiplication : Multiplication is the mathematical operation that is a shorthand for adding the same amount several times. For example $3\cdot 4=4+4+4=12.$

N-th root : The n-th root of a number $x\gt 0$ or $\sqrt[n]{x}$ is defined as the positive solution of the equation $(\sqrt[n]{x})^n=x.$ For example $\sqrt[4]{16}=2$ as $2^4=2 \cdot 2 \cdot 2 \cdot 2=16.$

Number : A number $x$ is a mathematical symbol representing a quantity.

Power : A power is a number of the form $a^b.$ $b$ is called the exponent of the power and $a^b$ is called a power of $a$. For natural numbers $b$ the number $a^b$ is an abbreviation for successively multiplying $a$ by itself $b$ times. For example $2^3=2\cdot 2\cdot 2=8.$ For fractional exponents $b=\frac{p}{q}$ the number $a^{\frac{p}{q}}$ is defined as $\sqrt[q]{a^p}.$ For arbitrary real exponents $b$ the power $a^b$ is defined as the limit of $a^{b_n}$ with rational $b_n$ that converge towards $b.$