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

Ask Plex AI about this problem

Get hints, ask questions, and work through this problem step by step

I'm Plex, here to help with problems on this worksheet!

Ask Plex AI about this problem

Get hints, ask questions, and work through this problem step by step

I'm Plex, here to help with problems on this worksheet!
[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: