Mathematics · May / June 2025 · Paper 21 · Question 17
0580
As printed in the paper
Show the answer and mark scheme
17(a)[2]
9 100 oe [2]
M1 for 3 10 × 3 10
17(b)(i)[2]
2 5 4 5 1 5 [2]
B1 for 2 5
17(b)(ii)[3]
16 30 oe [3]
3FT their tree diagram dep on probabilities < 1 M2FT for 4 6 × 2 5 + 2 6 × 4 5 or M1FT for 4 6 × 2 5 or for 2 6 × 4 5
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.