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Which statement about \(\sqrt{49}\) and \(\sqrt{50}\) in a square root spiral is correct?

Answer and explanation

Correct answer: \(\sqrt{49}\) is a whole number and \(\sqrt{50}\) is irrational

Since \(49=7^2\), \(\sqrt{49}=7\), which is a whole number. However, \(50\) is not a perfect square; it lies between \(49\) and \(64\), so \(\sqrt{50}\) is not a whole number and is irrational. Option C is incorrect because only \(\sqrt{49}\) is a whole number. Exam tip: A square root is a whole number only when the number is a perfect square.

Related tags

Square Root SpiralPerfect SquaresIrrational NumbersNumber SystemsWhole NumbersMathematicsClass 9 Mcq

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