IB Math AA HL  Questionbank
Counting Principles
Permutations & Combinations, Factorial Notation, Product Principle, Sum Principle…
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Question 1
calculator
easy
[Maximum mark: 4]
Find the number of ways in which ten different books can be given to Ethan, Henry, Joshua and Lucy, if Ethan is to receive $4$ books, Henry is to receive $3$ books, Joshua is to receive $2$ books and Lucy is to receive $1$ book.
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Question 2
calculator
easy
[Maximum mark: 4]
Find the number of ways in which twelve different baseball cards can be given to Emily, Harry, John and Olivia, if Emily is to receive $5$ cards, Harry is to receive $3$ cards, John is to receive $3$ cards and Olivia is to receive $1$ card.
easy
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Question 3
calculator
easy
[Maximum mark: 6]
A school basketball team of $5$ students is selected from $8$ boys and $4$ girls.

Determine how many possible teams can be chosen. [2]

Determine how many teams can be formed consisting of $3$ boys and $2$ girls? [2]

Determine how many teams can be formed consisting of at most $3$ girls? [2]
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Question 4
calculator
easy
[Maximum mark: 6]
A police department has $4$ male and $7$ female officers. A special group of $5$ officers is to be assembled for an undercover operation.

Determine how many possible groups can be chosen. [2]

Determine how many groups can be formed consisting of $2$ males and $3$ $\text{females.}$[2]

Determine how many groups can be formed consisting of at least one male. [2]
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Question 5
calculator
easy
[Maximum mark: 4]
Mark has created an online test for his Physics students to practice in class. There are $12$ questions to be attempted in random order. Two of the questions require the use of a calculator.
Find the number of different ways in which a student can attempt the test and encounter the two calculator required questions consecutively.
easy
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Question 6
calculator
medium
[Maximum mark: 4]
Peter needs to decide the order in which to schedule $14$ exams for his school. Two of these exams are Chemistry ($1$ SL and $1$ HL).
Find the number of different ways Peter can schedule the $14$ exams given that the two Chemistry subjects must not be consecutive.
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Question 7
calculator
medium
[Maximum mark: 6]
Ten students are to be arranged in a new chemistry lab. The chemistry lab is set out in two rows of five desks as shown in the following diagram.

Find the number of ways the ten students may be arranged in the lab. [1]
Two of the students, Hugo and Leo, were noticed to talk to each other during previous lab sessions.

Find the number of ways the students may be arranged if Hugo and Leo must sit so that one is directly behind the other. For example, Dest $1$ and Desk $6$. [2]

Find the number of ways the students may be arranged if Hugo and Leo must not sit next to each other in the same row. [3]
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Question 8
calculator
medium
[Maximum mark: 6]
Julie works at a book store and has nine books to display on the main shelf of the store. Four of the books are nonfiction and five are fiction. Each book is different. Determine the number of possible ways Julie can line up the nine books on the main shelf, given that

the nonfiction books should stand together; [2]

the nonfiction books should stand together on either end; [2]

the nonfiction books should stand together and do not stand on either end. [2]
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Question 9
calculator
medium
[Maximum mark: 6]
Six women and two men wait in a grocery store checkout line. Determine the number of possible ways these customers can stand in line, given that

the men do not stand together; [2]

the men do not stand on either end; [2]

the men do not stand together and do not stand on either end. [2]
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Question 10
calculator
medium
[Maximum mark: 5]
Sophia and Zoe compete in a freestyle swimming race where there are no tied finishes and there is a total of $10$ competitors.
Find the total number of possible ways in which the ten swimmers can finish if Zoe finishes

in the position immediately after Sophia;[2]

in any position after Sophia.[3]
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Question 11
calculator
medium
[Maximum mark: 5]
A music company announces that they are going to release a list of their top 10 artists. If 5 of them are pop artists, 3 of them are rock artists and 2 are hiphop artists, find the total number of possible ways in which

the rock artists are listed consecutively;[2]

the rock artists and the hiphop artists are both listed consecutively, with the 3 rock artists listed immediately below the 2 hiphop artists.[3]
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Question 12
calculator
hard
[Maximum mark: 6]
There are $11$ players on a football team who are asked to line up in one straight line for a team photo. Three of the team members named Adam, Brad and Chris refuse to stand next to each other. There is no restriction on the order in which the other team members position themselves.
Find the number of different orders in which the $11$ team members can be positioned for the photo.
hard
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Question 13
no calculator
hard
[Maximum mark: 7]
There are six office cubicles arranged in a grid with two rows and three columns as shown in the following diagram. Aria, Bella, Charlotte, Danna, and Emma are to be stationed inside the cubicles to work on various company projects.
Find the number of ways of placing the team members in the cubicles in each of the following cases.

Each cubicle is large enough to contain the five team members, but Danna and Emma must not be placed in the same cubicle.[2]

Each cubicle may only contain one team member. But Aria and Bella must not be placed in cubicles which share a boundary, as they tend to get distracted by each other.[5]
hard
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Question 14
calculator
hard
[Maximum mark: 6]
The barcode strings of a new product are created from four letters A, B, C, D and ten digits $0,1,2,\dots,9$. No three of the letters may be written consecutively in a barcode string. There is no restriction on the order in which the numbers can be written.
Find the number of different barcode strings that can be created.
hard
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Question 15
calculator
hard
[Maximum mark: 11]
Sophie and Ella play a game. They each have five cards showing roman numerals I, V, X, L, C. Sophie lays her cards face up on the table in order I, V, X, L, C as shown in the following diagram.
Ella shuffles her cards and lays them face down on the table. She then turns them over one by one to see if her card matches with Sophie's 4 card directly above. Sophie wins if no matches occur; otherwise Ella wins.

Show that the probability that Sophie wins the game is $\dfrac{11}{30}$.[6]
Sophie and Ella repeat their game so that they play a total of $90$ times. Let the discrete random variable $X$ represent the number of times Sophie wins.
 Determine:

the mean of $X$;

the variance of $X$. [5]

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Question 16
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hard
[Maximum mark: 25]
Jack and John have decided to play a game. They will be rolling a die seven times. One roll of a die is considered as one round of the game. On each round, John agrees to pay Jack $4 if $1$ or $2$ is rolled, Jack agrees to pay John $2 if $3,4,5$ or $6$ is rolled, and who is paid wins the round. In the end, who earns money wins the game.

Show that the probability that Jack wins exactly two rounds is $\dfrac{224}{729}$. [3]


Explain why the total number of outcomes for the results of the seven rounds is $128$.

Expand $(1 + y)^7$ and choose a suitable value of $y$ to prove that
$128 = \binom{7}{0} + \binom{7}{1} + \binom{7}{2} + \binom{7}{3} + \binom{7}{4} + \binom{7}{5} + \binom{7}{6} + \binom{7}{7}. \vspace{0.5em}$ 
Give a meaning of the equality above in the context of the seven
rounds.[4]



Find the expected amount of money earned by each player in the game.

Who is expected to win the game?

Is this game fair? Justify your answer. [3]


Jack and John have decided to play the game again.

Find an expression for the probability that John wins five rounds on the first game and two rounds on the second game. Give your answer in the form
$\binom{7}{r}^2\bigg[\frac{1}{3}\bigg]^s\bigg[\frac{2}{3}\bigg]^t \vspace{0.25em}$where the values of $r,s$ and $t$ are to be found.

Use your answer to (d) (i) and seven similar expressions to write down the probability that John wins a total of seven rounds over two games as the sum of eight probabilities.

Hence prove that
$\binom{14}{7} = \sum_{k = 0}^7 \binom{7}{k}^2. \vspace{0.5em}$[9]


Now Jack and John roll a die $12$ times. Let $A$ denote the number of rounds Jack wins. The expected value of $A$ can be written as
$\mathrm{E}[A] = \sum_{r=0}^{12} r\binom{12}{r} \left[\dfrac{a^{12r}}{b^{12}}\right] \vspace{0.25em}$
Find the value of $a$ and $b$.

Differentiate the expansion of $(1 + y)^{12}$ to prove that the expected
number of rolls Jack wins is $4$. [6]

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Frequently Asked Questions
What is the IB Math AA HL Questionbank?
The IB Math Analysis and Approaches (AA) HL Questionbank is a comprehensive set of IB Mathematics exam style questions, categorised into syllabus topic and concept, and sorted by difficulty of question. The bank of exam style questions are accompanied by high quality stepbystep markschemes and video tutorials, taught by experienced IB Mathematics teachers. The IB Mathematics AA HL Question bank is the perfect exam revision resource for IB students looking to practice IB Math exam style questions in a particular topic or concept in their AA Higher Level course.
Where should I start in the AA HL Questionbank?
The AA HL Questionbank is designed to help IB students practice AA HL exam style questions in a specific topic or concept. Therefore, a good place to start is by identifying a concept that you would like to practice and improve in and go to that area of the AA HL Question bank. For example, if you want to practice AA HL exam style questions that involve Complex Numbers, you can go to AA SL Topic 1 (Number & Algebra) and go to the Complex Numbers area of the question bank. On this page there is a carefully designed set of IB Math AA HL exam style questions, progressing in order of difficulty from easiest to hardest. If you’re just getting started with your revision, you could start at the top of the page with Question 1, or if you already have some confidence, you could start at the medium difficulty questions and progress down.
How should I use the AA HL Questionbank?
The AA HL Questionbank is perfect for revising a particular topic or concept, indepth. For example, if you wanted to improve your knowledge of Counting Principles (Combinations & Permutations), there is a set of full length IB Math AA HL exam style questions focused specifically on this concept. Alternatively, Revision Village also has an extensive library of AA HL Practice Exams, where students can simulate the length and difficulty of an IB exam with the Mock Exam sets, as well as AA HL Key Concepts, where students can learn and revise the underlying theory, if missed or misunderstood in class.
What if I finish the AA HL Questionbank?
With an extensive and growing library of full length IB Math Analysis and Approaches (AA) HL exam style questions in the AA HL Question bank, finishing all of the questions would be a fantastic effort, and you will be in a great position for your final exams. If you were able to complete all the questions in the AA HL Question bank, then a popular option would be to go to the AA HL Practice Exams section on Revision Village and test yourself with the Mock Exam Papers, to simulate the length and difficulty of an actual IB Mathematics AA HL exam.
More IB Math AA HL Resources
Questionbank
All the questions you could need! Sorted by topic and arranged by difficulty, with mark schemes and video solutions for every question.
Practice Exams
Choose your revision tool! Contains topic quizzes for focused study, Revision Village mock exams covering the whole syllabus, and the revision ladder to precisely target your learning.
Key Concepts
Helpful refreshers summarizing exactly what you need to know about the most important concepts covered in the course.
Past Papers
Full worked solutions to all past paper questions, taught by experienced IB instructors.