Higher November 2019 Paper 1 Q9
9. The diagram shows a dartboard with 4 sectors of equal size.
Sanjeev throws 3 darts which all hit this dart board.
Each dart is equally likely to hit any sector of the dart board.
He multiplies his three numbers to find his score.
Work out the probability that his score is an odd number. [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{1}{8}\) oe; ISW | B2 | B1 for \(\dfrac{1}{2} \times \dfrac{1}{2} \times \dfrac{1}{2}\) oe If no marks awarded, then SC1 for evidence of the only possible score being 1, 1, 1 e.g. in a partially complete list of possible scores with all other scores even and \(1 \times 1 \times 1\) listed as odd |
| (2) |