EFCC Recruitment Past Questions and Answers PDF Download 2026

Question 1: Compound DepreciationA vehicle purchased for ₦18,000,000 depreciates by 15% in its
first year and 10% in its second year. What is its value at the
end of the second year?

1. ₦13,500,000
2. ₦13,770,000
3. ₦14,000,000
4. ₦15,300,000

Show correct answer and explanation

Correct answer: B — ₦13,770,000.

First year: ₦18,000,000 × 0.85 = ₦15,300,000.

Second year: ₦15,300,000 × 0.90 = ₦13,770,000.

The second depreciation percentage is applied to the reduced
value, not the original purchase price.

Question 2: Ratio and AllocationA sum of ₦4,200,000 is allocated among three departments in the
ratio 2:3:7. How much does the department with the largest share receive?

1. ₦1,050,000
2. ₦1,400,000
3. ₦2,100,000
4. ₦2,450,000

Show correct answer and explanation

Correct answer: D — ₦2,450,000.

Total ratio parts = 2 + 3 + 7 = 12.

One part = ₦4,200,000 ÷ 12 = ₦350,000.

Largest share = 7 × ₦350,000 = ₦2,450,000.

Question 3: Work-Rate ProblemSix analysts can examine 180 transaction records in five days,
assuming each analyst works at the same constant rate. How many
days would nine analysts require to examine 324 records at the same rate?

1. 4 days
2. 5 days
3. 6 days
4. 7 days

Show correct answer and explanation

Correct answer: C — 6 days.

Six analysts × five days = 30 analyst-days.

Rate = 180 ÷ 30 = 6 records per analyst per day.

Nine analysts process 9 × 6 = 54 records daily.

Required time = 324 ÷ 54 = 6 days.

Question 4: ProbabilityA box contains 5 red files, 4 blue files and 3 green files.
If one file is selected at random, what is the probability that
it is not blue?

1. 1/3
2. 1/2
3. 2/3
4. 3/4

Show correct answer and explanation

Correct answer: C — 2/3.

Total files = 5 + 4 + 3 = 12.

Non-blue files = 5 + 3 = 8.

Probability = 8/12 = 2/3.

Question 5: Percentage ChangeAn organisation’s reported cases increased from 240 in January
to 300 in February. In March, the number fell by 20% from
February’s figure. What was the percentage change from January to March?

1. 0%
2. 4% increase
3. 10% increase
4. 20% decrease

Show correct answer and explanation

Correct answer: A — 0%.

March figure = 300 × 0.80 = 240.

January and March both recorded 240 cases. Therefore,
there was no net percentage change.

Question 6: Number SequenceFind the next number: 2, 6, 15, 31, 56, ___

1. 82
2. 86
3. 92
4. 96

Show correct answer and explanation

Correct answer: C — 92.

The differences are 4, 9, 16 and 25.

These are 2², 3², 4² and 5².

The next difference is 6² = 36.

Therefore, 56 + 36 = 92.

Question 7: Deductive ReasoningAll officers assigned to Unit X have completed security training.
Some trained officers are accountants. Which conclusion must be true?

1. All accountants work in Unit X.
2. Some officers in Unit X are accountants.
3. Every trained officer works in Unit X.
4. All officers assigned to Unit X have completed security training.

Show correct answer and explanation

Correct answer: D.

Option D restates the first statement. The information does
not establish that any officer in Unit X is an accountant.

Question 8: Conditional ReasoningA screening application follows these rules:

• If an applicant passes the aptitude test, the applicant proceeds to document verification.
• If the applicant proceeds to document verification, original credentials must be submitted for inspection.

Applicant K did not submit original credentials for inspection.
Assuming the rules were followed without exception, what can be concluded?

1. K passed the aptitude test.
2. K did not pass the aptitude test.
3. K must have withdrawn before applying.
4. K was automatically disqualified for fraud.

Show correct answer and explanation

Correct answer: B.

Passing leads to document verification, which requires original
credentials. Given the stated rules and no exceptions, the
failure to submit credentials implies that K did not pass.
The facts do not establish fraud or withdrawal.

Question 9: Arrangement PuzzleFive files—P, Q, R, S and T—are arranged in a row.

• P must be before Q.
• R must be after Q.
• S must be before P.
• T must be after R.

Which is a valid order?

1. P, S, Q, R, T
2. S, P, Q, R, T
3. S, Q, P, R, T
4. S, P, R, Q, T

Show correct answer and explanation

Correct answer: B — S, P, Q, R, T.

This order satisfies all four rules: S precedes P, P precedes Q,
Q precedes R, and R precedes T.

Question 10: VocabularyChoose the word closest in meaning to corroborate.

1. Conceal
2. Substantiate
3. Contradict
4. Postpone

Show correct answer and explanation

Correct answer: B — Substantiate.

To corroborate information means to support it with additional
evidence or testimony.

Question 11: Grammar and AgreementChoose the grammatically correct sentence.

1. Neither the investigator nor the witnesses was available.
2. Neither the investigator nor the witnesses were available.
3. Neither the witnesses nor the investigator were available.
4. Neither the investigator or the witnesses were available.

Show correct answer and explanation

Correct answer: B.

In this construction, the verb generally agrees with the nearer
subject. “Witnesses” is plural, so “were” is appropriate.
In option C, “investigator” is the nearer subject, so “was”
would normally be used.

Question 12: Sentence CompletionThe evidence was insufficient to establish guilt; ______,
the investigators continued examining the financial records.

1. nevertheless
2. because
3. consequently
4. similarly

Show correct answer and explanation

Correct answer: A — Nevertheless.

“Nevertheless” indicates contrast: despite the insufficient
evidence at that point, the examination continued.

Question 13: Reading Comprehension

Read the passage:

An unusual transaction does not, by itself, prove that a crime has
occurred. Investigators must examine the transaction’s context,
supporting records and the explanations offered by relevant parties.
A sound conclusion depends on evidence rather than assumption.

Which statement best captures the passage’s central idea?

1. Every unusual transaction is criminal.
2. Explanations from relevant parties should always be accepted.
3. Investigations should rely on evidence and context rather than assumptions.
4. Financial records are unnecessary when a transaction appears suspicious.

Show correct answer and explanation

Correct answer: C.

The passage emphasises context, supporting records and
evidence-based conclusions rather than assumptions.

Question 14: Money Laundering

Which option best describes the general purpose of money laundering?

1. Reporting all income to tax authorities.
2. Concealing the illicit origin of proceeds so they appear legitimate.
3. Transferring money between personal savings accounts.
4. Preparing audited financial statements.

Show correct answer and explanation

Correct answer: B.

Money laundering generally involves disguising the criminal
origin of proceeds to make them appear to come from legitimate
sources.

Question 15: Suspicious Transaction Analysis

A business reports unusually large cash transactions inconsistent
with its known business activities. What is the most appropriate
initial analytical response?

1. Declare the business guilty immediately.
2. Ignore the transactions because cash is legal tender.
3. Examine available records, transaction patterns and relevant explanations in accordance with applicable procedures.
4. Publicly disclose the customer’s private financial information.

Show correct answer and explanation

Correct answer: C.

An unusual transaction can warrant scrutiny, but it is not proof
of criminal conduct. The available facts should be assessed
under applicable laws and procedures.

Question 16: Evidence HandlingDuring an investigation, an officer receives a document that may be
relevant to a suspected financial offence. Which action best
supports evidential integrity?

1. Edit the document to make its meaning clearer.
2. Pass it around informally without recording who handled it.
3. Follow authorised procedures for documenting, preserving and handling the evidence.
4. Destroy the original after taking an unverified photograph.

Show correct answer and explanation

Correct answer: C.

Documentation, preservation and controlled handling help protect
evidence integrity and potential admissibility.

Question 17: Institutional AccountabilityWhich practice best promotes accountability in the management of
public funds?

1. Allow one person to authorise, pay and audit every transaction without oversight.
2. Maintain records, apply appropriate controls and conduct independent reviews.
3. Keep no receipts for cash payments.
4. Avoid audits whenever expenditure appears reasonable.

Show correct answer and explanation

Correct answer: B.

Reliable records, appropriate separation of duties and independent
reviews help identify errors, irregularities and misuse of funds.

Question 18: Review RateWhich quarter had the highest percentage of reports reviewed?

1. Q1
2. Q2
3. Q3
4. Q4

Show correct answer and explanation

Correct answer: B and D — Q2 and Q4.

Q1: 180 ÷ 240 × 100 = 75%.

Q2: 255 ÷ 300 × 100 = 85%.

Q3: 288 ÷ 360 × 100 = 80%.

Q4: 340 ÷ 400 × 100 = 85%.

Both Q2 and Q4 have the highest review rate. This question
intentionally demonstrates why answer options should be checked
for ambiguity before publication.

Question 19: Outstanding ReportsAcross all four quarters, how many reports had not yet been reviewed,
based on the table?

1. 217
2. 237
3. 247
4. 267

Show correct answer and explanation

Correct answer: B — 237.

Total received = 240 + 300 + 360 + 400 = 1,300.

Total reviewed = 180 + 255 + 288 + 340 = 1,063.

Outstanding reports = 1,300 − 1,063 = 237.

Question 20: Audit DiscrepancyA ledger records total payments of ₦12,480,000. The supporting
payment documents account for ₦11,730,000. What is the discrepancy,
and what is the most appropriate conclusion from this information alone?

1. ₦750,000; fraud has been conclusively proven.
2. ₦650,000; no further review is necessary.
3. ₦750,000; the difference requires investigation but does not, by itself, prove fraud.
4. ₦1,250,000; the discrepancy must be ignored.

Show correct answer and explanation

Correct answer: C — ₦750,000.

₦12,480,000 − ₦11,730,000 = ₦750,000.

The difference should be reconciled by checking records and
supporting evidence. A discrepancy warrants review