9709 · topic questions
Discrete random variables
12 past-paper questions on Discrete random variables
Every July, as part of a research project, Rita collects data about sightings of a particular kind of bird. Each day in July she…
Practise the full question →Given that the team scores a total of 5 goals in a randomly chosen match, find the probability that they score exactly 3 goals in…
Practise the full question →Draw up the probability distribution table for X.
Practise the full question →Draw up the probability distribution table for X.
Practise the full question →10 adult kestrels are selected at random. Find the probability that fewer than 3 have masses greater than 0.202kg.
Practise the full question →It is given that P(X = n) = P(X = n+1). Write down an equation in n, and hence find the value of n.
Practise the full question →Two values of W are chosen at random. Find the probability that the sum of these two values is less than 3.
Practise the full question →Draw up the probability distribution table for X.
Practise the full question →9 competitors who took part in this Saturday's event are selected at random. Find the probability that at least 2 and fewer than…
Practise the full question →Find the probability that Leno scores his second goal on or before his 5th attempt.
Practise the full question →For a random sample of 10 residents of Mahjing, find the probability that fewer than 8 classified their bus service as good or…
Practise the full question →Find the probability that she succeeds on fewer than 3 of these shots.
Practise the full question →
Question stems are shortened previews. Open a question to attempt the full version and have it marked.
Discrete random variables (9709) past-paper questions — marked instantly
These are real Cambridge Mathematics past-paper questions on Discrete random variables. Open one, attempt it, then upload your working — MarkScheme grades it against the official 9709 mark scheme so you see exactly where the marks are won and lost on this topic.
Frequently asked questions
- How many Discrete random variables questions are there for 9709?
- This page collects 12 recent Cambridge Mathematics (9709) past-paper questions tagged to Discrete random variables. Each links straight to instant marking against the official 9709 scheme.
- How are Discrete random variables answers marked?
- Type or photograph your working and MarkScheme scores it against the real 9709 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.
- Where can I learn Discrete random variables first?
- Start with the free Mathematics lesson on Discrete random variables, then come back and drill past-paper questions under timed conditions.