Foundation June 2018 Paper 1 Q18
18 \(A = \{\)multiples of 5 between 14 and 26\(\}\)
\(B = \{\)odd numbers between 14 and 26\(\}\)
(a) List the members of \(A \cup B\) (2)
(b) Describe the members of \(A \cap B\) (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| 15, 17, 19, 20, 21, 23, 25 | M1 | for listing either set eg 15,20,25 or 15,17,19,21,23,25 with no incorrect numbers |
| A1 | 15,17,19,20,21,23 and 25 with no repeats |
Additional guidance
The ‘lists’ may be seen in a Venn Diagram
or in the working space in part (b) provided they are not contradicted by incorrect lists in part (a)
If repeats (but no incorrect numbers) award M1 only.
| Answer | Mark | Mark scheme |
|---|---|---|
| Statement or 15 and 25 | C1 | eg odd multiples of 5 (between 14 and 26) oe NB Could be a general description, eg numbers that are in both (A and B), or 15 and 25 (ft from their sets A and B in part (a)) or numbers ending in 5 (between 14 and 26) |