Question

question 3
how many significant figures are in the following measurement?
2.30 x 10⁻⁶ cm

Explanation:

Step1: Identify non-exponential digits

Focus on $2.30$ (ignore $10^{-6}$).

Step2: Count significant figures

Non-zero digits (2,3) are significant; trailing zero after decimal is significant. Count: $2+1=3$.

Answer:

3