Answer:
Three.
Explanation:
According to significant figures count rule,
a) All the non zero digits are considered significant.
b) all the zeros between two non zero digits are significant.
c) the zeros after non zero digits are insignificant, it there is no decimal.
Example 200 : it has one significant number
d) the zeros after decimal and after non zero digit are significant. while zeros after decimal and before other digits are insignificant.
e) zeros before decimal are insignificant
Hence the given number has three significant figures.
