42. how many sig figs in the number 34021 (1 Point) [4) 2 3 5

## Step 1: Identifying Non-Zero Digits<br />### All non-zero digits are significant. In 34021, the digits 3, 4, 2, and 1 are all non-zero and therefore significant.<br /><br />## Step 2: Identifying Zeros Between Non-Zero Digits<br />### Zeros between non-zero digits are significant. In 34021, the zero is between the non-zero digits 4 and 2, making it significant.<br /><br />## Step 3: Counting Significant Figures<br />### The number 34021 has five significant figures (3, 4, 0, 2, and 1).