Question

How many significant digits are in `50.00`?

Answer 1

50.00 (4 significant figures)

Explanation:

there are 4 significant figures in `50.00`. The zeros in this number are trailing zeros in a number that has a decimal point.

There are 3 types of zeros:

1. Leading zero : Do not count as a significant figure.
   Example: 0.001 (1 significant figure), 0.2 (1 significant figure)
2. Captive zero: Always count as a significant figure.
   Example: 709 (3 significant figures)
3. Trailing zero: Counts as a significant figure if the number contains a decimal point. However, it does not count if the number does not contain a decimal point.
   Example: 50.00 (4 significant figures), 50 (1 significant figure), 50. (2 significant figures).