Grade 10 Maths · Probability · Paper 1

Calculating Probability Grade 10

Real Calculating Probability past paper questions and answers from 2023 to 2025, with each memo split into the ticks examiners give. Try one, mark yourself, and see exactly which skill cost you marks.

past paper questions: 20 past paper questions
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videos: 4 videos

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Question 8.1 · November 2024 · Paper 1 · Provincial · 2 marks

Consider events A and B.

P (A) = 0, 43

P (B) = 0, 37

and

P (A and B) = 0, 1591

8.1 Determine whether events A and B are complimentary.(2)

Work it out on paper first. Then mark yourself with the official memo, one tick at a time.

Calculating Probability skills

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More Calculating Probability Grade 10 questions and answers

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4. Question 3.1.2 · September 2024 · Provincial · 2 marks
3.1 Given: $P (A) = 0, 4$ ; $P (B) = 0, 5$ and $P (A and B) = 0, 25$ . Determine the:
3.1.2 $P (A or B)$ (2)
Show the memo (2 ticks)Memo
1. ✓
  Formula $P (A or B) = P (A) + P (B) - P (A and B) = 0, 4 + 0, 5 - 0, 25$
  1 mark · Use the addition rule
2. ✓
  Answer $= 0, 65$
  1 mark · Use the addition rule
5. Question 9.2.1 · November 2025 · Paper 1 · Provincial · 1 mark
9.2 The contingency table below represents 106 athletes' responses regarding jogging on the sand.

Answer the questions that follow. $Diagram for question 9.2$
9.2.1 If an athlete from this group is chosen randomly, what is the probability that it is a male?(1)
Show the memo (1 tick)Memo
1. ✓
  Answer $\frac{42}{106} = \frac{21}{53}$
  1 mark · Calculate a simple probability
6. Question 9.2.2 · November 2023 · Paper 1 · Provincial · 1 mark
9.2 A cellphone distribution company investigated the number of defective phones that they obtain from two suppliers, Axis Phones and Direct Phones. They recorded their findings in a contingency table, shown below.

Answer the questions that follow. $Diagram for question 9.2$
9.2.2 Calculate the probability that a cellphone chosen at random is supplied by Direct Phones.(1)
Show the memo (1 tick)Memo
1. ✓
  Answer $\frac{216}{600} = \frac{9}{25}$ or $0, 36$
  1 mark · Calculate a simple probability
7. Question a · Siyavula Grade 8 Mathematics, 26 Probability, Relative frequency, Worked example 26.4 · 1 mark
We toss a coin $20$ times and observe the outcomes. The results of the trials are listed below.
$H; H; H; T; T; H; H; H; H; H; T; T; H; T; T; H; T; T; T; H$
a If you work out the relative frequency after the first $10$ trials, what is the relative frequency of observing heads?(1)
Show the memo (1 tick)Memo
1. ✓
  Relative frequency after 10 trialsFor the first $10$ trials, we observed $8$ heads, so $t = 10$ , $p = 8$ .
  $f = \frac{p}{t} = \frac{8}{10} = 0, 8$
  1 mark · Use relative frequency

Calculating Probability Grade 10 videos

Short lessons from South African teachers first. Videos load only when you tap play, to save your data.

Math Antics - Basic Probabilitymathantics

Probability - Relative Frequency (Video 1)MME

Gr 11 Probability: Complimentary, mutually inclusiveKevinmathscience

Gr 11 Probability: Probability A or BKevinmathscience

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