CAIE IGCSE Mathematics C8.3.1 Combined Events with Replacement
Practise calculating combined probabilities from sample spaces, Venn diagrams and two-stage trees where items are replaced.
- Syllabus
- 2028–2030
- Course
- Mathematics 0580
- Level
- Core
Exam points
- keep second-stage probabilities unchanged when the first item is replaced
- multiply branch probabilities for a complete two-event route
- add separate route probabilities for an either-order outcome
C8.3.1 Calculate the probability of combined events using, where appropriate: question 1
Question (a)
(a)
Hemang buys two televisions.
The probability that a television is faulty is 0.02 .
[ 4 ]
Question (i)
(i)
Complete the tree diagram.
[ 2 ]
Question (ii)
(ii)
Find the probability that Hemang buys two faulty televisions.
[ 2 ]
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