Use the addition rule P(A or B)
10th grade (Year 11 in England) · 16 questions · Common Core: HSS.CP.B.7 · England: GCSE Higher Probability
Name
Date
Score/ 16
Question 1
A card is drawn from a standard 52-card deck. Find the probability that it is a king or a heart. Give a fraction in simplest form.
Answer(as a fraction)
Question 2
P(A) = 0.3, P(B) = 0.2 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 3
In a class, P(plays sport) = 0.6, P(plays an instrument) = 0.5 and P(sport or instrument) = 1. Find P(sport and instrument).
Answer
Question 4
A card is drawn from a standard 52-card deck. Find the probability that it is a number card from 2 to 10 or a diamond. Give a fraction in simplest form.
Answer(as a fraction)
Question 5
P(A) = 0.4, P(B) = 0.4 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 6
In a class, P(plays sport) = 0.4, P(plays an instrument) = 0.2 and P(sport or instrument) = 0.5. Find P(sport and instrument).
Answer
Question 7
A card is drawn from a standard 52-card deck. Find the probability that it is a picture card (J, Q, K) or a spade. Give a fraction in simplest form.
Answer(as a fraction)
Question 8
P(A) = 0.5, P(B) = 0.5 and P(A and B) = 0.3. Find P(A or B).
Answer
Question 9
In a class, P(plays sport) = 0.4, P(plays an instrument) = 0.3 and P(sport or instrument) = 0.6. Find P(sport and instrument).
Answer
Question 10
A card is drawn from a standard 52-card deck. Find the probability that it is a picture card (J, Q, K) or a spade. Give a fraction in simplest form.
Answer(as a fraction)
Question 11
P(A) = 0.4, P(B) = 0.5 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 12
In a class, P(plays sport) = 0.7, P(plays an instrument) = 0.5 and P(sport or instrument) = 0.8. Find P(sport and instrument).
Answer
Question 13
A card is drawn from a standard 52-card deck. Find the probability that it is a king or a heart. Give a fraction in simplest form.
Answer(as a fraction)
Question 14
P(A) = 0.3, P(B) = 0.3 and P(A and B) = 0.2. Find P(A or B).
Answer
Question 15
In a class, P(plays sport) = 0.5, P(plays an instrument) = 0.4 and P(sport or instrument) = 0.7. Find P(sport and instrument).
Answer
Question 16
A card is drawn from a standard 52-card deck. Find the probability that it is a queen or a red card. Give a fraction in simplest form.
Answer(as a fraction)
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