| Date | May 2018 | Marks available | 2 | Reference code | 18M.1.sl.TZ2.4 |
| Level | SL only | Paper | 1 | Time zone | TZ2 |
| Command term | Write down | Question number | 4 | Adapted from | N/A |
Question
The following table shows four different sets of numbers: \(\mathbb{N}\), \(\mathbb{Z}\), \(\mathbb{Q}\) and \(\mathbb{R}\).
Complete the second column of the table by giving one example of a number from each set.
[4]
a.
Josh states: “Every integer is a natural number”.
Write down whether Josh’s statement is correct. Justify your answer.
[2]
b.
Markscheme
(A1)(A1)(A1)(A1)(C4)
[4 marks]
a.
Incorrect (A1)
Natural numbers are positive integers. Integers can also be negative. (or equivalent) (R1) (C2)
Note: Accept a correct justification. Do not award (R0)(A1).
Accept: a statement with an example of an integer which is not natural.
[2 marks]
b.
Examiners report
[N/A]
a.
[N/A]
b.
Syllabus sections
Topic 1 - Number and algebra » 1.9 » Financial applications of geometric sequences and series: compound interest.
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