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Which number is closest to (\sqrt{6}) on the number line?

Answer and explanation

Correct answer: (2.45)

The direct answer is option A, 2.45. We know \(\sqrt6\approx2.449489\). Compare each candidate with this value. For A, the difference is about \(|2.45-2.449489|\approx0.000511\), which is extremely small. For B, 2.10, the difference is about 0.3495. For C, 2.90, the difference is about 0.4505. For D, 3.20, the difference is about 0.7505. Therefore A is clearly closest. Option B is too low, while C and D are too high and farther away. A useful check is that \(2.45^2=6.0025\), very close to 6, so 2.45 is a strong approximation of \(\sqrt6\). Memory cue: the closest number has the smallest absolute difference, not merely the same rough size.

Related tags

PolynomialsNumber-LineApproximationSquare-Root

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