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A-Level MathematicsYear 2021Q15

48   15. (i) Use proof by exhaustion to show that for n ∈ , n  4 (n + 1) 3 > 3 n (2) (ii) Given that m3 + 5 is odd, use proof by contradiction to show, using algebra, that m is even. (4) ___________________________________________ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___________________________________________

Paper Source:9MA0_01_que_20211007.pdf

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Exam Specification Info

This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.

Syllabus levelAdvanced Level (A-Level)

SubjectMathematics

Official MarksVariable (2–6 marks)