AS & A Level Mathematics (9709) — May–June 2025, Paper 52
7 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Rachel has three coins. The first coin is biased so that the probability of obtaining a head when it is thrown is 1/3. The second coin is biased so that the probability of…
Answer this question and get it marked →In Millford, 70% of the residents own a bicycle. A random sample of 160 residents is selected. Use a suitable approximation to find the probability that more than 120 of these…
Answer this question and get it marked →A bag contains 4 blue marbles and 12 red marbles. One marble is selected at random from the bag. If this marble is blue, it is replaced in the bag, but if it is red, it is not…
Answer this question and get it marked →Vehicles approaching a certain road junction from Bromley must go either left, right or straight on. Over time, it is known that 30% turn left, 25% turn right and 45% go straight…
Answer this question and get it marked →The times taken, t minutes, by 300 students to travel to Hollowton College are recorded. The results are summarised in the table below. Time (t minutes) t ≤ 10 t ≤ 20 t ≤ 30 t ≤…
Answer this question and get it marked →Find the number of different ways in which the 10 letters in the word AMALGAMATE can be arranged so that there is an M at the beginning, an M at the end and no As are together.
Answer this question and get it marked →Kestrels are birds whose adult wingspans are normally distributed with mean 74.8 cm and standard deviation 3.2 cm. A random sample of 120 adult kestrels is selected. How many of…
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