Question

how many significant figures are in the measurement 0.02030?

Explanation:

Step1: Recall significant - figures rules

Non - zero digits are always significant. Zeros between non - zero digits are significant. Leading zeros (zeros before the first non - zero digit) are not significant. Trailing zeros in a number with a decimal point are significant.

Step2: Analyze the number 0.02030

The leading zeros (the two zeros before 2) are not significant. The non - zero digits 2, 3 are significant. The zero between 2 and 3 is significant, and the trailing zero after 3 is significant.

Answer:

4