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SAF Officer Cadet Selection Aptitude Test (Singapore)

Practice Questions100 questions

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Key Facts: CMPB Psychometric Exam

1.5-2.5h

Test Duration

CMPB Official

Registration Fee

MINDEF

Adaptive

Test Format

VAC Computerized

SJT

Vocation Fit

Military Ethics

OCS/SCS

Leadership Path

Commander Selection

6 Sections

Cognitive Domains

MAPAS Syllabus

The CMPB Psychometric assessment is a compulsory computerized adaptive test taken during NS medical screening. Taking about 1.5 to 2.5 hours, the assessment is free and evaluates verbal, numerical, abstract, and spatial reasoning along with mechanical understanding. The results are crucial for vocational allocation and leadership selection (OCS/SCS) in the SAF, SPF, or SCDF.

Sample CMPB Psychometric Practice Questions

Try these sample questions to review concepts for the CMPB Psychometric exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A military transport truck travels the first 120 km of its route at a speed of 60 km/h and the next 180 km at a speed of 90 km/h. What is the average speed of the truck for the entire journey?

A.70 km/h

B.75 km/h

C.80 km/h

D.85 km/h

Explanation: The average speed is calculated by dividing the total distance by the total time. The first part takes 120 km / 60 km/h = 2 hours, and the second part takes 180 km / 90 km/h = 2 hours. The total distance is 300 km, and the total time is 4 hours, resulting in 300 / 4 = 75 km/h.

2If 6 recruits can clean 12 barracks rooms in 3 hours, how many hours will it take 9 recruits to clean 18 barracks rooms at the same work rate?

A.2 hours

B.3 hours

C.4 hours

D.4.5 hours

Explanation: The work rate can be analyzed using the formula: Work = Rate * People * Time. The rate of cleaning is 12 rooms / (6 recruits * 3 hours) = 2/3 rooms per recruit-hour. For 9 recruits cleaning 18 rooms: 18 = (2/3) * 9 * Time, which simplifies to 18 = 6 * Time, resulting in Time = 3 hours.

3A platoon has a ratio of combat-fit recruits to non-combat-fit recruits of 8:3. If there are 120 combat-fit recruits in the platoon, how many non-combat-fit recruits are there?

A.30 recruits

B.45 recruits

C.60 recruits

D.80 recruits

Explanation: The ratio of combat-fit to non-combat-fit is 8:3. Since 8 units represent 120 combat-fit recruits, 1 unit equals 120 / 8 = 15 recruits. The number of non-combat-fit recruits is 3 units, which equals 3 * 15 = 45 recruits.

4A water storage tank at an army camp is 35% full. After adding 450 liters of water, the tank becomes 65% full. What is the total capacity of the water storage tank?

A.1,200 liters

B.1,500 liters

C.1,800 liters

D.2,000 liters

Explanation: The increase in water volume represents 65% - 35% = 30% of the tank's total capacity. Since 30% of the capacity is 450 liters, 1% is 450 / 30 = 15 liters. Therefore, the total capacity (100%) is 15 * 100 = 1,500 liters.

5What is the next number in the sequence: 5, 11, 23, 47, 95, ...?

A.189

B.191

C.193

D.195

Explanation: The pattern in this sequence is that each term is multiplied by 2 and then increased by 1 (Term_n = 2 * Term_n-1 + 1). Applying this to the last term: 2 * 95 + 1 = 190 + 1 = 191.

6A supply officer buys rations for 120 soldiers for 15 days. If 30 more soldiers join the camp on the first day, for how many days will the rations last?

A.10 days

B.12 days

C.13.5 days

D.14 days

Explanation: The total number of ration portions is 120 soldiers * 15 days = 1,800 soldier-rations. When 30 more soldiers join, the total number of soldiers becomes 120 + 30 = 150. The rations will last 1,800 soldier-rations / 150 soldiers = 12 days.

7Recruit A starts jogging at 8 km/h from camp. Recruit B starts from the same point 15 minutes later and jogs along the same route at 10 km/h. How long will it take Recruit B to catch up with Recruit A?

A.30 minutes

B.45 minutes

C.60 minutes

D.75 minutes

Explanation: In the 15 minutes (0.25 hours) before Recruit B starts, Recruit A travels a distance of 8 km/h * 0.25 h = 2 km. The relative speed of Recruit B catching up to Recruit A is 10 km/h - 8 km/h = 2 km/h. The time required for B to catch up is Distance / Relative Speed = 2 km / 2 km/h = 1 hour (60 minutes).

8A section has 12 recruits. The average weight of the first 11 recruits is 65 kg. When the 12th recruit's weight is included, the average weight of the section increases to 66 kg. What is the weight of the 12th recruit?

A.72 kg

B.75 kg

C.77 kg

D.78 kg

Explanation: The total weight of the first 11 recruits is 11 * 65 = 715 kg. The total weight of all 12 recruits is 12 * 66 = 792 kg. The weight of the 12th recruit is the difference: 792 - 715 = 77 kg.

9An ammunition crate contains 240 rounds of ammunition. If 15% of the rounds are tracer rounds, how many non-tracer rounds are in the crate?

A.36

B.180

C.204

D.216

Explanation: The percentage of non-tracer rounds is 100% - 15% = 85%. The number of non-tracer rounds is 85% of 240, which is calculated as 0.85 * 240 = 204 rounds. Alternatively, the number of tracer rounds is 15% of 240 = 36, and 240 - 36 = 204 rounds.

10What number comes next in the series: 2, 6, 12, 20, 30, ...?

A.36

B.40

C.42

D.46

Explanation: The differences between consecutive terms are increasing consecutive even numbers: 6 - 2 = 4, 12 - 6 = 6, 20 - 12 = 8, 30 - 20 = 10. The next difference must be 12, making the next number 30 + 12 = 42. Alternatively, the sequence is defined by n * (n + 1) for n = 1, 2, 3, 4, 5: 5 * 6 = 30, so the next is 6 * 7 = 42.

About the CMPB Psychometric Exam

The CMPB Pre-Enlistment Psychometric Assessment (historically known as MAPAS) is a computerized adaptive test taken by all male Singaporean citizens and permanent residents during their pre-enlistment medical screening. It measures basic reasoning, numerical logic, spatial visualization, mechanical comprehension, and clerical speed. The scores are used by the Ministry of Defence (MINDEF) to allocate servicemen to suitable vocations and identify potential candidates for commander training at OCS or SCS.

Exam sponsor: Central Manpower Base (CMPB), Singapore Armed Forces. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Computerized adaptive testing (CAT) covering cognitive reasoning, spatial ability, and mechanical comprehension

Time Limit

1.5 - 2.5 hours

Passing Score

Not applicable (placement grading only)

Exam / Certification Fees

$0 (Free)

Exam sponsor website

Reported exam pass rate: Not applicable. used for vocational allocation Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

35%

Numerical & Verbal Reasoning

Basic arithmetic, percentage word problems, series patterns, verbal analogies, and logical deduction.

30%

Spatial & Abstract Ability

Mental rotation of objects, 3D block counting, cube-folding layouts, and visual matrix patterns.

20%

Mechanical Comprehension

Physical properties of gears, pulleys, levers, electrical circuits, and hydraulics.

15%

Situational Judgment & Personality

Questions regarding military ethics, bunk teamwork, leadership under stress, and behavioral style.

Preparing for the CMPB Psychometric Exam

What You Need to Know

Passing score: Not applicable (placement grading only)
Assessment: Computerized adaptive testing (CAT) covering cognitive reasoning, spatial ability, and mechanical comprehension
Time limit: 1.5 - 2.5 hours
Exam / certification fees: $0 (Free) Official sources

Using Our Practice Resources

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CMPB Psychometric: Suggested Study Strategy

1Ensure you get a full night of sleep before your medical screening day as fatigue will negatively affect your reaction speed.

2Brush up on basic mechanical principles such as gear rotation directions, lever classes, and pulley systems.

3Familiarize yourself with 3D spatial puzzles, particularly counting hidden blocks in stacks and visualizing folded cubes.

4Practice mental arithmetic and number series to improve speed and accuracy without a calculator.

5During the test, read the instructions for each subtest carefully, as some sections may be timed differently.

6For situational judgment questions, select answers that prioritize teamwork, discipline, integrity, and safety.

Frequently Asked Questions

What is the CMPB Psychometric test?

It is a compulsory computer-based aptitude assessment administered by the Central Manpower Base (CMPB) to Singaporean National Service (NS) pre-enlistees. The test evaluates cognitive abilities, mechanical understanding, and spatial skills to determine suitable vocational assignments and commander school eligibility.

Can you fail the CMPB Psychometric test?

No, there is no passing or failing grade. The test is used solely for vocational matching and leadership screening. However, performing poorly may restrict you from specialized or technical vocations and lead to exclusion from Officer Cadet School (OCS) shortlists.

How long does the assessment take?

The psychometric test itself typically takes about 1.5 to 2.5 hours to complete. It is conducted at the Vocational Assessment Centre (VAC) in CMPB on the same day as your physical medical screening, which takes around 5 hours in total.

Is there a fee for the psychometric test?

No, the test and the entire medical screening process are free of charge and fully sponsored by the Singapore Ministry of Defence (MINDEF).

Can I retake the CMPB Psychometric test?

No, the test is a one-time assessment taken during your pre-enlistment checkup. Retakes are not allowed except under exceptional circumstances approved by MINDEF (such as technical computer failure during the test).

How should I prepare for the assessment?

Since it is an aptitude test measuring innate cognitive skills, intensive study is not required. However, practicing spatial rotation, block counting, basic gear and lever physics, and numerical pattern questions is highly recommended to become familiar with the format.