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Between which two integers will (\sqrt{50}) be located on the number line?

Answer and explanation

Correct answer: (7) and (8)

The direct answer is option C: between 7 and 8. To locate a square root, compare the number under the root with consecutive perfect squares. We have \(7^2=49\) and \(8^2=64\). Since \(49<50<64\), taking positive square roots gives \(7<\sqrt{50}<8\). Option A, 5 and 6, is wrong because their squares are 25 and 36, both below 50. Option B, 6 and 7, is wrong because 50 is greater than \(7^2=49\), so the root is slightly greater than 7. Option C is correct. Option D, 8 and 9, is wrong because \(50<64=8^2\), so the root is below 8. Memory trick: bracket a square root using the two neighbouring perfect squares.

Related tags

Number-LineSquare-RootIntervalComparison

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