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Digital SAT Format: Sections, Modules, Timing and Question CountsHow the Digital SAT test is built: two sections, four modules, how many questions and minutes each has, how adaptive modules work, and what every domain covers.
Reading & Writing
SAT Grammar Rules: Punctuation, Agreement and Verb Tense With ExamplesThe SAT grammar rules behind Standard English Conventions questions: commas, semicolons, colons, dashes, agreement, tense and modifiers, each with a worked example.
SAT Math
SAT Math Practice Questions: 12 Problems Across All Four Domains12 SAT math practice questions covering Algebra, Advanced Math, Problem-Solving and Data Analysis, and Geometry, each solved step by step with the trap explained.
Strategy
SAT Practice Test: How to Take a Full Practice Test at HomeHow to take a full SAT practice test at home under real Digital SAT timing, what to do in each module, and how to turn the results into a study plan.
Reading & Writing
SAT Reading Practice Questions: How to Answer Each Question TypeSAT reading practice for every question type: words in context, structure, evidence, inferences and central ideas, with an original example and solution for each.
Sunday, November 1
Today's practice set
Five questions on probability and conditional probability. A different skill comes up tomorrow. Pick an answer to see the explanation.
0 of 5 answered · 0 correct · set 1
- Question 1Medium
A survey asked students in two grades whether they prefer art or music. The results are shown in the table.
Art Music Total 9th grade 28 37 65 10th grade 28 38 66 Total 56 75 131 If a 10th grader in the survey is chosen at random, what is the probability that the student prefers music?
Show answer and explanation
Answer: B
"Given" narrows the group: only the 66 students in that row count.
Of those, 38 match.
Probability = 38/66 = 19/33.
- Question 2Medium
A survey asked students in two grades whether they prefer art or music. The results are shown in the table.
Art Music Total 9th grade 14 8 22 10th grade 39 11 50 Total 53 19 72 If a 10th grader in the survey is chosen at random, what is the probability that the student prefers music?
Show answer and explanation
Answer: C
"Given" narrows the group: only the 50 students in that row count.
Of those, 11 match.
Probability = 11/50.
- Question 3Medium
A survey asked students in two grades whether they prefer art or music. The results are shown in the table.
Art Music Total 9th grade 36 11 47 10th grade 12 12 24 Total 48 23 71 If a student who prefers art is chosen at random, what is the probability that the student is in 9th grade?
Show answer and explanation
Answer: D
"Given" narrows the group: only the 48 students in that column count.
Of those, 36 match.
Probability = 36/48 = 3/4.
- Question 4Easier
A survey asked students in two grades whether they prefer art or music. The results are shown in the table.
Art Music Total 9th grade 23 11 34 10th grade 13 33 46 Total 36 44 80 If a student in the survey is chosen at random, what is the probability that the student is a 9th grader who prefers music?
Show answer and explanation
Answer: C
The whole survey is the group: 80 students.
Of those, 11 match.
Probability = 11/80.
- Question 5Medium
A survey asked students in two grades whether they prefer art or music. The results are shown in the table.
Art Music Total 9th grade 21 34 55 10th grade 15 36 51 Total 36 70 106 If a student who prefers art is chosen at random, what is the probability that the student is in 9th grade?
Show answer and explanation
Answer: D
"Given" narrows the group: only the 36 students in that column count.
Of those, 21 match.
Probability = 21/36 = 7/12.
Math skills
Algebra
Problem-Solving and Data Analysis
Geometry and Trigonometry
Reading and Writing skills
Information and Ideas
Craft and Structure
Expression of Ideas
Standard English Conventions
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