4024/11 May/Jun 2022, Question 6: Prime Numbers
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Give one example in each part of a number lying strictly between 10 and 15, first a prime and then an irrational value.
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Part (a) · 1 mark
Write down a prime number that is greater than 10 and less than 15.
- 1Primes between 10 and 15: 11, 13
- 2e.g. 11
Answer11 or 13
Part (b) · 1 mark
Write down an irrational number that is greater than 10 and less than 15.
- 110² = 100 and 15² = 225, so √n with 100 < n < 225, n not a square
- 2e.g. √150
AnswerAny irrational number between 10 and 15
Stuck on a step? Read the free lesson: Prime Numbers
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