Edexcel P2 2021 January — Question 5

Exam BoardEdexcel
ModuleP2 (Pure Mathematics 2)
Year2021
SessionJanuary
TopicProof
5. (i) Use algebra to prove that for all \(x \geqslant 0\) $$3 x + 1 \geqslant 2 \sqrt { 3 x }$$ (ii) Show that the following statement is not true.
"The sum of three consecutive prime numbers is always a multiple of 5 "
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