Perplex
Dashboard
Learn

No active concepts yet.

Browse by TopicReview VideosFormula BookletMy Progress
BlogLanding Page
Sign UpLogin
Perplex
Perplex
Dashboard
Learn

No active concepts yet.

Browse by TopicReview VideosFormula BookletMy Progress
BlogLanding Page
Sign UpLogin
Perplex
IB Math AAHL
/
Probability
/

Problem Bank

IB Math AAHL
/
Probability
/

Problem Bank

[Maximum mark: 6]

Consider events ​A​ and ​B​ such that ​P(A)=k, ​P(B)=0.4, and ​P(A∪B)=0.7.

  1. Show that ​P(A∣B)=410k−3​.

    [4]
  2. Hence find ​k​ given that ​A​ and ​B​ are independent.

    [2]

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: 6]

Consider events ​A​ and ​B​ such that ​P(A)=k, ​P(B)=0.4, and ​P(A∪B)=0.7.

  1. Show that ​P(A∣B)=410k−3​.

    [4]
  2. Hence find ​k​ given that ​A​ and ​B​ are independent.

    [2]

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!