The number 0.0102030 has 6 significant figures. Each of the non-zero numerals (3 of those), the zeros between the non-zero numbers (2), and the zero on the end of the number if it is right of the decimal (1). The significant figures are in bold:
0.0102030
6
There are four significant figures in the measurement 1.050 L.
Three - the first two zeros are placeholders.
None. The abbreviation cm represents one or more centimeters. In your question there are no numbers associated with the cm unit, therefore there are no significant figures.
There are two significant figures: 2 and 0 The significant figures of a number are those digits that carry meaning contributing to its precision. Leading zeros (the zero before the 2) are not significant.
There are 4 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 5 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.