Q:
# What Is Index Form in Mathematics?

**When a number is expressed with exponents, or one number to a power of another, it is considered to be in index form.** For example, 27 can be written in index form as 3^3. This is because 27 is 3x3x3 or 3^3.

A common question in math will be to write a number in index form using a different number as base. An example is being asked to write the number 16 in index form using base 2. Because 16 is 2x8, and 8 is 2x4, and 4 is 2x2, 16 in index form using base 2 would be written as 2^4.

Learn more about Numbers-
Q:
## What Does "prime" Mean in Math?

A: In mathematics, a prime number is any whole number greater than one that has no positive factors other than one and itself. For example, the number 17 is p... Full Answer >Filed Under: -
Q:
## What Is a Golden Ratio?

A: The golden ratio in mathematics is the irrational number (1 + sqrt 5)/2. A decimal approximation of the number is 1.618. The German astronomer Johannes Kep... Full Answer >Filed Under: -
Q:
## What Is a Factor in Math?

A: In mathematics, a factor of a base number is any number that can be evenly divided into the base number. Due to this definition, a factor can only be less ... Full Answer >Filed Under: -
Q:
## Is Zero Even or Odd?

A: In mathematics, zero is an even number. To be even, a number must be divisible by two with no remainder. Zero fits this description because zero divided by... Full Answer >Filed Under: