AS & A Level Mathematics (9709) — May–June 2025, Paper 51
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The masses of the bags of rice made by a company are normally distributed with mean mu kg and standard deviation 0.14 kg. The probability that the mass of a randomly chosen bag of…
Answer this question and get it marked →Find the number of different arrangements of the 8 letters in the word KANGAROO in which the two As are together and the two Os are not together.
Answer this question and get it marked →Last Sunday, teams of runners took part in a charity event. The time taken, in seconds, to run 50 m was recorded, correct to 1 decimal place, for each runner. The times recorded…
Answer this question and get it marked →Every Saturday, a particular community holds a 'Puzzle' event to raise money for a new Leisure Centre. Competitors attempt to solve a puzzle as quickly as possible. Last Saturday,…
Answer this question and get it marked →In a group of 20 musicians, there are 9 guitarists, 6 pianists and 5 drummers. 6 musicians are selected from these 20 to perform at a concert. Find the number of different ways in…
Answer this question and get it marked →A bag contains 10 marbles, of which 4 are red and 6 are blue. Four marbles are selected from the bag at random, without replacement. The random variable X denotes the number of…
Answer this question and get it marked →