Common Core HSS.CP.B.7 worksheet
High school · 16 questions · Common Core: HSS.CP.A.2, HSS.CP.B.7 · England: GCSE Foundation Probability, GCSE Higher Probability
Name
Date
Score/ 16
Question 1
In a class of 39, 19 play guitar, 20 play piano and 8 play both. One student is chosen at random. What is the probability they play guitar or piano (or both)? Simplest form.
Answer(as a fraction)
Question 2
In a class, P(plays sport) = 0.7, P(plays an instrument) = 0.4 and P(sport or instrument) = 1. Find P(sport and instrument).
Answer
Question 3
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 4
A bag has 3 red and 7 blue counters. Two are taken with replacement. What is the probability both are red? 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) = 0.2. Find P(A or B).
Answer
Question 6
In a class of 32, 12 play guitar, 21 play piano and 9 play both. One student is chosen at random. What is the probability they play guitar or piano (or both)? Simplest form.
Answer(as a fraction)
Question 7
In a class, P(plays sport) = 0.5, P(plays an instrument) = 0.2 and P(sport or instrument) = 0.6. Find P(sport and instrument).
Answer
Question 8
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 9
A bag has 7 red and 7 blue counters. Two are taken with replacement. What is the probability both are red? Give a fraction in simplest form.
Answer(as a fraction)
Question 10
P(A) = 0.3, P(B) = 0.3 and P(A and B) = 0.2. Find P(A or B).
Answer
Question 11
In a class of 30, 13 play guitar, 20 play piano and 5 play both. One student is chosen at random. What is the probability they play both? Simplest form.
Answer(as a fraction)
Question 12
In a class, P(plays sport) = 0.4, P(plays an instrument) = 0.3 and P(sport or instrument) = 0.5. 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
A bag has 6 red and 3 blue counters. Two are taken without replacement. What is the probability both are red? Give a fraction in simplest form.
Answer(as a fraction)
Question 15
P(A) = 0.6, P(B) = 0.3 and P(A and B) = 0.1. Find P(A or B).
Answer
Question 16
In a class of 30, 24 play guitar, 12 play piano and 10 play both. One student is chosen at random. What is the probability they play guitar or piano (or both)? Simplest form.
Answer(as a fraction)
All done? Color in the animal! · Free from eurekami.com/math