WJEC Unit 2 2024 June — Question 3

Exam BoardWJEC
ModuleUnit 2 (Unit 2)
Year2024
SessionJune
TopicIndependent Events
TypeVenn diagram with independence constraint

  1. The following Venn diagram shows the participation of 100 students in three activities, \(A , B\), and \(C\), which represent athletics, baseball and climbing respectively.
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For these 100 students, participation in athletics and participation in climbing are independent events.
  1. Show that \(x = 10\) and find the value of \(y\).
  2. Two students are selected at random, one after the other without replacement. Find the probability that the first student does athletics and the second student does only climbing.