4024/12 Oct/Nov 2024, Question 12: Irrational Numbers
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 1 mark
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The question, in short
From the list 1/3, √4, 2⁰, √5, 10/8, 2⁻¹, identify which single number is irrational.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 1 mark
- 1√4 = 2, 2⁰ = 1, 2⁻¹ = 1/2, 1/3 and 10/8 are all fractions, so rational
- 2√5 cannot be written as a fraction, so the irrational number is √5
Answer√5
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