How many significant figures are there in the measured number 23.023?

Question

G1 Physics · Accepted Answer

Step 1 — Significant-digit convention: Every nonzero digit is significant. A zero between nonzero digits is also significant. Step 2 — Count digits in 23.023: The digits are 2, 3, 0, 2, 3. The interior zero is between nonzero digits and counts. Step 3 — Total: Number of significant figures = 5. Answer: 5.