How many significant figures are present in the following?
500.0

How many significant figures are present in the following?
2.0034

Round up the following upto three significant figures:
34.216

Round up the following upto three significant figures:
10.4107

Round up the following upto three significant figures:
0.04597

Round up the following upto three significant figures:
2808

Express the following numbers to four significant figures:
5.607892

Express the following numbers to four significant figures:

32.392800

Express the following numbers to four significant figures:
1·78986 × 10³

Express the following numbers to four significant figures:

0·007837