Foundation November 2024 Paper 3 Q20
20 Dan is playing cards.
The probability that he will win a game of cards is 0.3
Dan plays two games of cards.
(a) Complete the probability tree diagram.
(b) Work out the probability that Dan does not win either game. (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| (0.3) 0.7 0.3 0.7 0.3 0.7 | B2 | all probabilities correctly placed |
| (B1 | for 0.7 correctly placed for Game 1) |
Additional guidance
Accept equivalent fractions or percentages for probabilities
| Answer | Mark | Mark scheme |
|---|---|---|
| 0.49 | M1 | for a correct method, ft their tree diagram eg \(0.7 \times 0.7\) only |
| A1 | oe, ft their tree diagram |
Additional guidance
ft their diagram provided probabilities are less than 1
An answer of \(\dfrac{0.49}{1}\) scores M1A0 unless 0.49 seen