Two-event conditional probability word problems is a grade 7 math skill aligned to Common Core standard 7.SP.C.8: find probabilities of compound events using organized lists, tables, tree diagrams, and simulation. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 10 two-event conditional probability word problems problems our math games drill.
In a class of students, students bring lunch from home, and of those students also bring a reusable water bottle. If a student who brings lunch from home is selected at random, what is the probability that the student also brings a reusable water bottle?
Restrict to the students who bring lunch from home. of them also bring a bottle, so .
The letters of the word BANANA are placed in a bag. Two letters are selected one at a time without replacement. What is the probability of drawing an A and then an N?
The word BANANA has letters with A's and N's. and , so .
The letters of the word STRAWBERRY are placed in a bag. Two letters are selected one at a time without replacement. What is the probability of drawing an R and then another R?
The word STRAWBERRY has letters with R's. and , so .
The letters of the word TOMORROW are placed in a bag. Two letters are selected one at a time without replacement. What is the probability of drawing an R and then a T?
The word TOMORROW has letters with R's and T. and , so .
The letters of the word COLOR are placed in a bag. Two letters are selected one at a time without replacement. What is the probability of drawing an O and then another O?
The word COLOR has letters with O's. and , so .
The letters of the word MISSISSIPPI are placed in a bag. Two letters are selected one at a time without replacement. What is the probability of drawing an S and then another S?
The word MISSISSIPPI has letters with S's. and , so .
A bag contains red marbles and white marbles. Two marbles are drawn one at a time without replacement. The first marble drawn is red. What is the probability that the second marble is white?
After one red marble is removed, white marbles remain out of marbles in the bag. So .
A bag contains black marbles and white marbles. Two marbles are drawn one at a time without replacement. The first marble drawn is black. What is the probability that the second marble is also black?
After one black marble is removed, black marbles remain out of marbles in the bag. So .
Questions like these are served inside our head-to-head math games.
The free placement test finds your level, then every match serves two-event conditional probability word problems questions at exactly the right difficulty.
