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# Prob and Stats I Past Papers

## Paper 51 Oct Nov 2021 Probability & Statistics I – 9709/51/O/N/21

Check out my complete solution here: » Full Solutions « Like and subscribe too! =) 1.     Two fair coins are thrown at the same time. The random variable $X$ is the number of throws of the two coins required to obtain two tails at the same time.     (a)     Find …

## Paper 53 May June 2021 Probability & Statistics I – 9709/53/M/J/21

Check out my complete solution here: » Full Solutions « Like and subscribe too! =) 1.     The heights in cm of 160 sunflower plants were measured. The results are summarised on the following cumulative frequency curve.         (a)     Use the graph to estimate the number of plants with …

## Paper 52 Feb Mar 2020 Probability & Statistics I – 9709/52/F/M/20

1.     The 40 members of a club include Ranuf and Saed. All 40 members will travel to a concert. 35 members will travel in a coach and the other 5 will travel in a car. Ranuf will be in the coach and Saed will be in the car. In how many ways can …