recall probability as a measure of โthe likelihood of occurrenceโ of an event
understand the notion of a conditional probability and recognise and use language that indicates conditionality
establish and use the formula ๐(๐ดโฉ๐ต) = ๐(A)๐(๐ต) for independent events ๐ด and ๐ต, and recognise the symmetry of independence
