Assertion (A) : (2 - √5)2 is a rational number. Reason (R): (√5)2 is a rational number.

CBSE Class 10 Maths PYQ · Real Numbers · Irrational · 1 Mark · March 2026 · Basic

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1391 Mark · March 2026 · Basic
Assertion (A) : $(2 - \sqrt{5})^2$ is a rational number.
Reason (R): $(\sqrt{5})^2$ is a rational number.
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Ans. (D) Assertion (A) is false but Reason (R) is true.
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