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
In a class, P(plays sport) = 0.7, P(plays an instrument) = 0.5 and P(sport or instrument) = 1.1. Find P(sport and instrument).
Answer
Question 2
P(A) = 0.3, P(B) = 0.5 and P(A and B) = 0.2. Find P(A or B).
Answer
Question 3
A card is drawn from a standard 52-card deck. Find the probability that it is a red card or a king. Give a fraction in simplest form.
Answer(as a fraction)
Question 4
In a class, P(plays sport) = 0.7, P(plays an instrument) = 0.4 and P(sport or instrument) = 0.8. Find P(sport and instrument).
Answer
Question 5
P(A) = 0.5, P(B) = 0.5 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 6
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 7
In a class, P(plays sport) = 0.6, P(plays an instrument) = 0.3 and P(sport or instrument) = 0.7. Find P(sport and instrument).
Answer
Question 8
P(A) = 0.4, P(B) = 0.5 and P(A and B) = 0.2. Find P(A or B).
Answer
Question 9
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 10
In a class, P(plays sport) = 0.5, P(plays an instrument) = 0.5 and P(sport or instrument) = 0.8. Find P(sport and instrument).
Answer
Question 11
P(A) = 0.4, P(B) = 0.4 and P(A and B) = 0.2. Find P(A or B).
Answer
Question 12
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 13
In a class, P(plays sport) = 0.7, P(plays an instrument) = 0.2 and P(sport or instrument) = 0.8. Find P(sport and instrument).
Answer
Question 14
P(A) = 0.4, P(B) = 0.2 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 15
A card is drawn from a standard 52-card deck. Find the probability that it is a red card or a king. Give a fraction in simplest form.
Answer(as a fraction)
Question 16
In a class, P(plays sport) = 0.3, P(plays an instrument) = 0.2 and P(sport or instrument) = 0.4. Find P(sport and instrument).
Answer
Write your answers right on the page. · Free from eurekami.com