Part 19 of our Analytical Ability reviewer has 20 practice questions in the style of the Civil Service Exam. Answer them in order, read the explanation after each one, and check your score against the 80% passing mark at the end. Questions and choices are reshuffled every time you retake the part.
Start Part 19Sample questions from Part 19
Here are a few questions from this part. Take the full test to answer all 20 and get your score.
Sample question 1
Premise 1: If the audit finds errors, then the accountant revises the report.
Premise 2: It is known that the accountant does not revise the report.
Which conclusion must be true?
- The audit finds errors.
- The audit does not find errors.
- Either the audit finds errors, or the accountant revises the report.
- Both the audit finds errors and the accountant does not revise the report.
Answer: The audit does not find errors.This is modus tollens. If the audit finds errors, then the accountant revises the report would have to follow; since the accountant does not revise the report, it must be that the audit does not find errors. If the audit finds errors were true, the accountant revises the report would be true, which contradicts Premise 2.
Sample question 2
1. Some licensed nurses are barangay health workers.
2. All barangay health workers are employees who joined the seminar.
3. Some employees who joined the seminar are not barangay health workers.
Which conclusion must be true?
- All licensed nurses are employees who joined the seminar.
- All barangay health workers are licensed nurses.
- All licensed nurses are barangay health workers.
- Some licensed nurses are employees who joined the seminar.
Answer: Some licensed nurses are employees who joined the seminar.Test every possible arrangement of the groups (Venn-diagram cases) that fits the premises. The answer is true in all of them (24 cases checked by enumeration). Each of the others can fail: “All licensed nurses are employees who joined the seminar.” is false in a case where the only kinds of members that exist are: [licensed nurses, not barangay health workers, not employees who joined the seminar] [not licensed nurses, not barangay health workers, employees who joined the seminar] [licensed nurses, barangay health workers, employees who joined the seminar]. “All barangay health workers are licensed nurses.” is false in a case where the only kinds of members that exist are: [not licensed nurses, not barangay health workers, employees who joined the seminar] [not licensed nurses, barangay health workers, employees who joined the seminar] [licensed nurses, barangay health workers, employees who joined the seminar]. “All licensed nurses are barangay health workers.” is false in a case where the only kinds of members that exist are: [licensed nurses, not barangay health workers, not employees who joined the seminar] [not licensed nurses, not barangay health workers, employees who joined the seminar] [licensed nurses, barangay health workers, employees who joined the seminar].
Sample question 3
Submitting complete requirements is sufficient for an application to be accepted. Mia's application was not accepted.
Which conclusion is logically correct?
- Mia submitted complete requirements.
- Mia's application was filed late.
- Mia did not submit complete requirements.
- Every incomplete application is accepted.
Answer: Mia did not submit complete requirements.If the result did not occur, the sufficient condition could not have been met (otherwise the result would have followed). So Mia's requirements were incomplete.
Sample question 4
1. Some vendors in the market are not persons who pay stall fees.
2. No persons who pay stall fees are senior citizens.
3. Some persons who pay stall fees are vendors in the market.
Which conclusion must be true?
- Some vendors in the market are not senior citizens.
- No vendors in the market are senior citizens.
- Some persons who pay stall fees are not vendors in the market.
- Some senior citizens are not vendors in the market.
Answer: Some vendors in the market are not senior citizens.Test every possible arrangement of the groups (Venn-diagram cases) that fits the premises. The answer is true in all of them (20 cases checked by enumeration). Each of the others can fail: “No vendors in the market are senior citizens.” is false in a case where the only kinds of members that exist are: [vendors in the market, persons who pay stall fees, not senior citizens] [vendors in the market, not persons who pay stall fees, senior citizens]. “Some persons who pay stall fees are not vendors in the market.” is false in a case where the only kinds of members that exist are: [vendors in the market, not persons who pay stall fees, not senior citizens] [vendors in the market, persons who pay stall fees, not senior citizens] [not vendors in the market, not persons who pay stall fees, senior citizens]. “Some senior citizens are not vendors in the market.” is false in a case where the only kinds of members that exist are: [vendors in the market, persons who pay stall fees, not senior citizens] [vendors in the market, not persons who pay stall fees, senior citizens].
Sample question 5
Premise 1: All jeepneys are public vehicles.
Premise 2: All public vehicles are vehicles that need a franchise.
Which conclusion must be true?
- All vehicles that need a franchise are jeepneys.
- None of the jeepneys are among the vehicles that need a franchise.
- All vehicles that need a franchise are public vehicles.
- All jeepneys are vehicles that need a franchise.
Answer: All jeepneys are vehicles that need a franchise.Chain the premises: jeepneys → public vehicles → vehicles that need a franchise. Therefore all jeepneys are vehicles that need a franchise. The reverse statements do not follow.
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