How many significant figures does 50.003 have

5

Step-by-step explanation:

Significant figures are usually non-zero numbers. The only time 0 is a significant figure is when it is in between 2 non-zero numbers.

50.003

This number has 5 figures

There are 3 0s, but they are in between 2 non-zero numbers (5 and 3). Therefore, all 5 digits are significant figures.

So, there are a total of 5 significant figures.