Number of significant figures in 0.0005487 is?? Is it 4 or 7, please explain it?

Question

Answer

Its going to be 4 significant figures in 0.0005487 as the rules of significant figures says that, (1) zeros

to the right of a nonzero integer and after a decimal point are significant. For example- 5.00 has

three significant figures,

500.0 has

four significant figures. (2)

zeros to the left of a number are not significant 0.005 has

one significant

digit.

Hope u understood :)