Higher June 2025 Paper 2 Q7
7 The five possible outcomes of an event are A, B, C, D and E.
The table shows some of the probabilities.
| Outcome | A | B | C | D | E |
|---|---|---|---|---|---|
| Probability | 0.18 | 0.2 |
P(C) \(=\) P(B) \(+\) 0.1
P(D) \(=\) P(E)
Work out \(\quad\) P(D) [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(0.2 + 0.1\) or 0.3 | M1 | oe fractions, decimals or percentages |
| \(1 - 0.18 - 0.2 -\) their P(C) or 0.32 | M1 | oe fractions, decimals or percentages \(0 \lt\) their P(C) \(\lt 0.62\) implied by correct answer from their P(C) |
| 0.16 | A1 | oe fraction, decimal or percentage |
Additional guidance
Probabilities may be seen in the table
Ignore conversion or simplification attempt after correct answer