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Selection Decision Tables Concepts
LOGICALREASONING

Selection Decision Tables Concepts

Learn decision table techniques for analyzing conditions, rules, selections, and logical outcomes.

Your examples are clear, but the section titles can be made more consistent with common aptitude/reasoning terminology. Here’s a refined version.


1. Candidate Eligibility Matrix Matching

Idea

Determine whether a candidate satisfies all recruitment criteria by comparing their profile with the prescribed eligibility conditions.

Rule

  • Check each mandatory criterion (age, qualification, experience, score, etc.) one by one.
  • Mark each criterion as Pass or Fail.
  • A candidate is selected only if all mandatory conditions are satisfied.
  • If an exception or relaxation rule exists, apply it before making the final decision.

Example

Problem:

Eligibility Criteria:

  • Age: 21–30 years
  • Degree: At least 60%
  • Experience: At least 2 years

Candidate X:

  • Age: 25
  • Degree: 55%
  • Experience: 3 years

Should Candidate X be selected?

Solution

Step 1: Check Age.

25 lies between 21 and 30.

Result: ✓ Pass

Step 2: Check Degree.

Required = 60%

Candidate = 55%

Result: ✗ Fail

Step 3: Check Experience.

Required = 2 years

Candidate = 3 years

Result: ✓ Pass

Step 4: Final Decision.

One mandatory criterion (Degree) is not satisfied.

Since no relaxation is mentioned, the candidate cannot be selected.

Answer: Rejected


2. Multi-Condition Decision Trees

Idea

Determine the final outcome by following a sequence of conditional rules.

Rule

  • Start from the first condition.
  • At each step, evaluate the condition.
  • Follow the appropriate Yes/No branch.
  • Continue until a final outcome (Select, Interview, Reject, Refer, etc.) is reached.

Example

Problem:

Decision Rules:

  • If Score > 80%Interview

  • Otherwise, check:

    • If Experience > 5 yearsInterview
    • Else → Reject

Candidate:

  • Score = 75%
  • Experience = 6 years

Solution

Step 1: Check Score.

75% is not greater than 80%.

Follow the No branch.

Step 2: Check Experience.

6 years is greater than 5 years.

Follow the Yes branch.

Step 3: The decision tree ends at Interview.

Answer: Interview


3. Exception Rule Handling

Idea

Apply special relaxation rules when a candidate fails a normal eligibility criterion but qualifies under an officially stated exception.

Rule

  • Check the normal eligibility rules first.
  • If a mandatory condition fails, look for any applicable exception.
  • Apply an exception only if it is explicitly provided.
  • If multiple exceptions exist, apply them according to their stated priority.

Example

Problem:

Rule:

  • Minimum score = 65%

Exception:

  • Candidates scoring 60–64% who have a patent or published research should be referred to the Director.

Candidate:

  • Score = 62%
  • Published Papers = 2

Solution

Step 1: Apply the normal rule.

Required score = 65%

Candidate score = 62%

Result: Does not satisfy the normal criterion.

Step 2: Check the exception.

  • Score is between 60 and 64%
  • Candidate has published research ✓

Both exception conditions are satisfied.

Step 3: Apply the exception.

Instead of rejection, the candidate is forwarded for special consideration.

Answer: Refer to Director


Quick Exam Tricks

Candidate Eligibility

Check every mandatory criterion

All Pass?
     ↓         ↓
   Yes         No
 Select     Check Exception

       Exception Applies?
           ↓           ↓
         Yes          No
        Refer      Reject

Decision Tree

Start

Evaluate Condition

Follow Yes/No branch

Repeat until final decision

Exception Rule

Normal Rule

Condition Failed?

Check Exception

Applies?
 ↓           ↓
Yes         No
Refer     Reject

These three topics together cover the Decision Making / Eligibility Criteria questions commonly asked in SSC, Bank, Insurance, and other competitive aptitude examinations.

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