Assignment 3 - Significant Figures

What is $$78.5$$  rounded to 1 significant figure?

Round $$1047.78$$  to 3 significant figures

How many significant figures does the number $$216$$  has

How many significant figures are there in the number $$0.0012$$  ?

How many significant figures are there in the number $$70,000$$  ?

How many significant figures are there in the number $$0.012300$$  ?

What is the second significant figure in $$0.40520$$  ?

Round off $$509.94$$  to 4 significant figures.

Round off $$0.010229$$  to 4 significant figure.

How many significant figures are in the number $$0.00204$$