4MA0 Foundation June 2013 Paper 1R Q20
20
(a) \(A = \{\text{s, u, p, e, r}\}\)
\(B = \{\text{c, o, m, p, u, t, e, r}\}\)
List the members of the set
\(B = \{\text{c, o, m, p, u, t, e, r}\}\)
List the members of the set
(i) \(A \cap B\)
(ii) \(A \cup B\)
(2)(b) \(X = \{\text{prime numbers}\}\)
\(Y = \{\text{factors of } 12\}\)
Is it true that \(X \cap Y = \varnothing\)?
Tick (✓) the appropriate box.
☐ Yes ☐ No
Explain your answer. (1)
\(Y = \{\text{factors of } 12\}\)
Is it true that \(X \cap Y = \varnothing\)?
Tick (✓) the appropriate box.
☐ Yes ☐ No
Explain your answer. (1)
| Scheme | Marks |
|---|---|
| (i) u, p, e, r | B1 |
| (ii) s, c, o, m, p, u, t, e, r | B1 |
| (2) |
Notes
B1: Any order. Brackets and commas not necessary
B1: B0 if ‘p’ or ‘u’ or ‘e’ or ‘r’ repeated
| Scheme | Marks |
|---|---|
| “no” 2 (or 3) are prime, 2 (or 3) belongs to \(X\) & \(Y\) etc | B1 |
| (1) |
Notes
B1: identifies the element 2 or 3 or 2 and 3 eg \(X \cap Y = \{2, 3\}\)
dependent on “No” box ticked or "No" stated in answer with neither box ticked