SharpkopMaths P1 · Probability and counting
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A group of learners write examinations in Physical Sciences (P), Accounting (A) and History (H).
- Every learner in the group writes at least one of these subjects.
- 20 learners write Physical Sciences.
- 17 learners write Accounting.
- 18 learners write History.
- 4 learners write Physical Sciences and Accounting, but not History.
- 3 learners write Physical Sciences and History, but not Accounting.
- 2 learners write Accounting and History, but not Physical Sciences.
- 8 learners write Accounting only.
11.22 marks
Calculate the probability that a learner chosen at random writes at least TWO of the three subjects.
NSCBased on Nov 2024 · Paper 1 · Q11.2
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