Region counts and containment

Region counts and containment

Secondary 4
3 marks
TGM Original Questions

The diagram shows the numbers of elements in each region. The universal set \(\xi\) contains 28 elements.

  1. Find \(n(A\cap B)\).[1]
  2. Find \(x\).[1]
  3. Is \(A\subseteq B\)? Explain your answer.[1]

Solution:

Solution locked

Sign in to view the step-by-step solution

Please join our E Math programme to search for similar questions for more practice.

E Math Tuition
Answer:(a) \(5\) (b) \(12\) (c) No; the A-only region is nonempty.

Need help? Join our JC Math tuition classes.

Learn more