Ali says that 6.998 rounded to 2 significant figures is 7. Explain why Ali is wrong? What is the correct answer? - Mathematics for School Students - Quora
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Why are some physics answers rounded to only 2 significant digits? For example, if the exact answer is 3.141592654, why do they often round to only 3.1, rather than 3.14 or 3.142? - Quora
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