Paper 2 · Probability
⏱ Tested in 1 exam question since 2015
Lesson 5 of 11
LCOL Probability 5: nCr
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- Use nCr to choose a group where order doesn't matter
- Combine choices with the ‘and’ (multiply) rule
Formula used
nCr (choosing a group)
Use the nCr button: n nCr r
On page 20 of the log tables — read it off, don’t memorise.Most recent exam questions
- 2015 P2 Q1(c)
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