Question

how many significant figures are in this number ? 0.0000620

Explanation:

Step1: Recall sig fig rules

Leading zeros (before non - zero digits) are not significant. Non - zero digits are significant. Trailing zeros after a decimal point are significant.
For the number \(0.0000620\):

• The leading zeros (the five zeros before 6) are not significant.
• The non - zero digits 6 and 2 are significant.
• The trailing zero after 2 (after the decimal point) is significant.

Step2: Count significant figures

Count the significant digits: 6, 2, and 0 (the trailing one). So we have 3 significant figures.

Answer:

3