How many significant figures are there in the number ?
Answer and explanation
Correct answer: D. 4
- Step 1: Leading zeros are not significant, so start counting at the first non-zero digit, .
- Step 2: The digits from there are . The zero between non-zero digits counts, and the trailing zero after the decimal point counts too.
- Step 3: That is significant figures.
Answer
4.
Why not the others: 2: This ignores the zero between and and the trailing zero. 3: This ignores the trailing zero after the decimal point. 5: This counts the leading zero after the decimal point as well.
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