Question Detail
Question
Which of the following measurements has exactly two significant figures?
Correct Answer
Option C is the correct answer.
Detailed Explanation
3400 without a decimal point is ambiguous, but typically it is considered to have 2 significant figures if it's a rough measurement (the trailing zeros are placeholders). 0.00340 has 3, 3.40 × 10³ has 3, 3.004 has 4.
Hint
Trailing zeros in a number without a decimal point are not significant.