Answer
(a) 1
(b) 3
(c) 3
(d) 4
(e) 2
(f) 1
(g) 2
Work Step by Step
To find the number of significant figures in a number, we measure how many digits are in between the first and last significant figure.
(a) The first significant figure is 6, and since there are no following digits there is just one significant figure.
(b) The first significant figure is 6 and the last is 5, so in the number 0.0605, there are three significant figures.
(c) The first significant figure is 6 and the last is 5, so in the number 60.5 there are three significant figures.
(d) The first significant figure is 6 and the last is 5, so in the number 605.5, there are four significant figures.
(e) The first significant figure is 9 and the last is 6, so in the number 960 x $10^{-3}$, there are two significant figures.
(f) The first significant figure is 6 and the last is also 6, so in the number 6, there is one significant figure.
(g) The first significant figure is 6 and the last is 0, so in the number 60, there are two significant figures.
