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प्रश्न
Which of the following measurements has exactly two significant figures?
पर्याय
0.00680 km
6800 km
68.0 km
0.068 km
MCQ
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उत्तर
0.068 km
Reason:
The leading zeros (0.0) are simply placeholders and are not counted as significant figures, leaving 6 and 8 as the two significant figures (Rule 3).
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