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Key Facts: AOSB Aptitude Exam
3 tests
Reasoning sections (verbal, numerical, abstract)
British Army AOSB
70 in 12 min
Abstract reasoning questions and time
AOSB aptitude test format
40 in 15 min
Verbal reasoning questions and time
AOSB aptitude test format
36 in 15 min
Numerical reasoning questions and time
AOSB aptitude test format
No fee
Cost to attend AOSB
British Army
2 stages
Briefing then Main Board
British Army AOSB
The AOSB Mental Aptitude Tests are the British Army's computer-based officer-selection reasoning battery. They include Verbal Reasoning (40 questions in 15 minutes), Numerical Reasoning (36 questions in 15 minutes), and Abstract Reasoning (70 questions in 12 minutes), plus short current-affairs items. The tests run at both the Briefing and the harder Main Board. There is no fee to attend, results are reported as an officer-potential grade rather than a single pass mark, and a successful Main Board leads toward Sandhurst.
Sample AOSB Aptitude Practice Questions
Try these sample questions to test your AOSB Aptitude exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Passage: "All vehicles entering the camp must display a valid pass. Some passes are issued only for a single day. The guardroom records every vehicle that enters." Statement: "Every vehicle entering the camp is recorded by the guardroom." Based ONLY on the passage, is the statement True, False, or Cannot Say?
2Passage: "The platoon trains every weekday morning. On Wednesdays the training is replaced by classroom instruction." Statement: "The platoon trains in the field on Wednesday mornings." Based ONLY on the passage, is the statement True, False, or Cannot Say?
3Passage: "Several officers in the mess speak French. Captain Hughes is an officer in the mess." Statement: "Captain Hughes speaks French." Based ONLY on the passage, is the statement True, False, or Cannot Say?
4Passage: "No recruit may carry a loaded weapon inside the accommodation block. Private Shaw is a recruit." Statement: "Private Shaw may carry a loaded weapon inside the accommodation block." Based ONLY on the passage, is the statement True, False, or Cannot Say?
5Passage: "The exercise was postponed because of fog. Whenever the exercise is postponed, the catering order is cancelled." Statement: "The catering order for the exercise was cancelled." Based ONLY on the passage, is the statement True, False, or Cannot Say?
6Passage: "The report must be signed by the duty officer before it is filed. Lieutenant Khan filed the report yesterday." Statement: "The report Lieutenant Khan filed was signed by the duty officer." Based ONLY on the passage, is the statement True, False, or Cannot Say?
7Passage: "All members of the rugby team are in the second battalion. Some members of the second battalion are medics." Statement: "Some members of the rugby team are medics." Based ONLY on the passage, is the statement True, False, or Cannot Say?
8Passage: "The quartermaster issues kit only on Mondays and Thursdays. The store is closed on public holidays regardless of the day." Statement: "Kit can be issued on a Thursday that is a public holiday." Based ONLY on the passage, is the statement True, False, or Cannot Say?
9Passage: "The patrol left at 0600 and was due back within six hours. They radioed at 1100 to say they were ahead of schedule." Statement: "The patrol returned before 1200." Based ONLY on the passage, is the statement True, False, or Cannot Say?
10Passage: "Cadets who fail the swim test must retake it within two weeks. Cadet Obi passed the swim test on her first attempt." Statement: "Cadet Obi must retake the swim test within two weeks." Based ONLY on the passage, is the statement True, False, or Cannot Say?
About the AOSB Aptitude Exam
The Army Officer Selection Board (AOSB) Mental Aptitude Tests are the computer-based psychometric assessments used in British Army officer selection. The battery comprises three strictly timed reasoning tests: Verbal Reasoning (40 questions in 15 minutes, answered True/False/Cannot Say), Numerical Reasoning (36 questions across nine four-part scenarios in 15 minutes) and Abstract/non-verbal Reasoning (70 questions in 12 minutes). Short current-affairs and general-knowledge questions are also administered as part of the wider board. The aptitude tests appear at both the AOSB Briefing and the more demanding Main Board, alongside non-MCQ stages such as the planning exercise, command tasks, interviews, and the multi-stage fitness test.
Questions
146 scored questions
Time Limit
Verbal 15 min, Numerical 15 min, Abstract 12 min (plus short current-affairs items)
Passing Score
Not published
Exam Fee
No fee to attend AOSB; travel and accommodation are covered by the Army (British Army, Army Recruiting & Training Division (ARTD), at the Army Officer Selection Board, Westbury)
AOSB Aptitude Exam Content Outline
Numerical Reasoning
36 questions in 15 minutes across nine four-part scenarios — arithmetic, fractions, percentages, ratios, rates, speed-distance-time, geometry, and data interpretation from tables and graphs
Verbal Reasoning
40 questions in 15 minutes — judging statements True, False, or Cannot Say from a passage, plus vocabulary, word relationships, and logical deduction
Abstract Reasoning
70 questions in 12 minutes — non-verbal pattern recognition, sequences, rotations, analogies, and Set A/Set B/neither classification
Current Affairs & General Knowledge
Awareness of UK and international news, defence and security issues, UK institutions, and general knowledge for the wider board and interviews
How to Pass the AOSB Aptitude Exam
What You Need to Know
- Passing score: Not published
- Exam length: 146 questions
- Time limit: Verbal 15 min, Numerical 15 min, Abstract 12 min (plus short current-affairs items)
- Exam fee: No fee to attend AOSB; travel and accommodation are covered by the Army
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
AOSB Aptitude Study Tips from Top Performers
Frequently Asked Questions
What are the AOSB Mental Aptitude Tests?
They are the British Army's computer-based, multiple-choice reasoning tests used in officer selection. The battery covers Verbal Reasoning, Numerical Reasoning, and Abstract (non-verbal) Reasoning, supported by short current-affairs and general-knowledge questions, and is taken at both the Briefing and the Main Board.
How many questions and how long is each section?
Verbal Reasoning has 40 questions in 15 minutes, Numerical Reasoning has 36 questions in 15 minutes (nine scenarios with four questions each), and Abstract Reasoning has 70 questions in 12 minutes. The tests are strictly timed and many candidates do not finish every question.
Who administers the AOSB?
The AOSB is run by the British Army's Army Recruiting & Training Division (ARTD) at the Army Officer Selection Board in Westbury. Candidates apply through the official Army jobs website and progress through earlier recruitment stages first.
Is there a fee to attend?
No. There is no fee to attend the AOSB, and the Army covers candidates' travel and accommodation for the assessment. Optional commercial practice materials are the main cost a candidate might choose to incur.
What is the pass mark?
The Army does not publish a single pass mark for the aptitude tests. Performance feeds into an overall officer-potential grade alongside the planning exercise, command tasks, interviews, and fitness assessment rather than producing one numeric test score.
What is the difference between the Briefing and the Main Board?
The Briefing is a shorter assessment that includes the aptitude tests and screens candidates for the Main Board. The Main Board is longer and more demanding, with a harder version of the aptitude tests plus the planning exercise, command tasks, interviews, and fitness tests that determine selection for Sandhurst.
Is current affairs really part of selection?
Yes. Candidates take short current-affairs and general-knowledge questions and are expected to discuss UK and international news, especially defence and security issues, during interviews and group discussions. Following the news regularly is strongly advised.
Can I retake the assessment?
Candidates who are unsuccessful may be able to re-attend after a specified waiting period, depending on the outcome and the advice given. Re-attendance is handled through the standard Army recruitment process.