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At least 1 and at most 7.

It could be 3,999,999.9 rounded to 7 significant figures;

It could be 3,999,999 rounded to 6 significant figures;

It could be 4,000,015 rounded to 5 significant figures;

It could be 4,000,429 rounded to 4 significant figures;

It could be 3,999,999 rounded to 3 significant figures;

It could be 4,049,999 rounded to 2 significant figures;

It could be 4,492,467 rounded to 1 significant figure.

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9y ago

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