5. Let A = {letters in the word kangaroo } and B = {letters in the word orangutan } (i) Copy and complete the Venn diagram provided and fi ll in the missing information. (ii) List the elements in A. (iii) List the elements in B. (iv) What is #(A ∩ B)?
A
(v) Write down a subset of A that has two elements and is also a subset of B.
(vi) Write down a subset of B that has two elements and is not a subset of A.
6. 핌 = {natural numbers from 1 to 15 inclusive} P = {multiples of 3} Q = {prime numbers} (i) Copy the Venn diagram and fi ll in the missing information.
(ii) State whether each of the following statements is true or false and justify your answer.
(a) (P ∩ Q) = ∅ (d) {1} ⊂ Q
(b) P ≠ Q (e) { } ⊄ P
(c) (P ∪ Q) = 핌 (f) {3} ∉ (P ∩ Q)
7. The statements below are about two non-empty sets A and B, and the universal set 핌 .
Copy the table and put a tick (✓) in the correct box in each row to show whether each statement is always true, sometimes true, or never true. Justify your answer in each case.