Created by StemPy LabAvogadro's number is often written as . How many significant figures does this have?
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← The water level in a tank is measured as (50 ± 1) cm in the morning and (48 ± 1) cm in the evening. What is the percentage error in the fall of the level?In a project, Kabir calculates x = (a² √b)/c³ from three readings. He knows a to within 1%, b to within 2% and c to within 1%. By what percentage, at most, can his value of x be wrong? →
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