How many significant figures does this number contain: 5.684?
May 21, 2017
There are three important rules for determining how many significant figures are in a number:
- Non-zero digits are always significant.
- Zeros between two significant digits are significant.
- Trailing zeros are significant ONLY in the decimal portion .
The number 5.684 contains four non-zero digits and no zeros.
∴ There are four significant figures in the number.