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  • Dashboard
Topics
Exponents & LogarithmsRounding & ErrorSequences & SeriesCounting & BinomialsProof and ReasoningComplex NumbersAlgebra Skills
Paper 3
Plus
Calculator Skills
Review VideosFormula BookletAll Study Sets
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Perplex
IB Math AAHL
/
Proof and Reasoning
/
Problem Bank
IB Math AAHL
/
Proof and Reasoning
/
Problem Bank

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[Maximum mark: 4]

Prove that if ​x​ is even and ​y​ is odd, then ​5x−7y​ is odd.

[4]
1 free
[Maximum mark: 4]

Prove that if ​x​ is even and ​y​ is odd, then ​5x−7y​ is odd.

[4]
1 free