How many significant figures does this number contain: 5.684?

1 Answer
May 21, 2017

The number contains four significant figures.


There are three important rules for determining how many significant figures are in a number:

  1. Non-zero digits are always significant.
  2. Zeros between two significant digits are significant.
  3. 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.