Answer
a) 3
b) 2
c) 4
d) 3
Work Step by Step
a) The number 53.2 has 3 sig figs, any non-zero number is significant.
b) Zeros leading a non-zero number are not significant. 0.53 has 2 sig figs: 5,3.
c) Zeros trailing a non-zero number are significant. 5.320 has four sig figs: 5, 3, 2, 0.
d) Zeros leading a non-zero number are not significant. 0.0532 has 3 sig figs: 5, 3, 2.
