Question

Which of the following numbers has 1 significant figure?

• A. 0.06
• B. 0.6
• C. 6
• D. 60

Answer 1

Answer: (D)

60

There are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant.

Hence, only option D has one significant figure and all others have 2 significant figures.

Hence, the correct option is $\text{D}$