Using significant figures, match the following

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i→b; ii→a; iii→a; iv→c

i→a; ii→a; iii→c; iv→d

i→a; ii→b; iii→c; iv→d

i→a; ii→a; iii→d; iv→c

answer is D.

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Detailed Solution

All digits are significant after decimal47.23 ÷ (2.3) = 20.5 ≃ 21 (should have only two significant digits.)3 is a number with one significant digit.

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