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Perplex
Dashboard
Topics
Exponents & LogarithmsApproximations & ErrorSequences & SeriesCounting & BinomialsProof and ReasoningComplex Numbers
Cartesian plane & linesQuadraticsFunction TheoryTransformations & asymptotesPolynomials
2D & 3D GeometryTrig equations & identitiesVectors
ProbabilityDescriptive StatisticsBivariate StatisticsDistributions & Random Variables
DifferentiationIntegrationDifferential EquationsMaclaurin
Review VideosFormula BookletMy Progress
BlogLanding Page
Sign UpLogin
Perplex
IB Math AAHL
/
Counting & Binomials
/
Problem Bank
IB Math AAHL
/
Counting & Binomials
/
Problem Bank

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[Maximum mark: 4]

Pascal is picking a 4 digit code, but decides that her code will either contain only even digits, or only odd digits, and that no digit will be repeated.

Find the number of possible codes.

[4]
Enter your answer:
[Maximum mark: 4]

Pascal is picking a 4 digit code, but decides that her code will either contain only even digits, or only odd digits, and that no digit will be repeated.

Find the number of possible codes.

[4]
Enter your answer: