How many business rules are captured in the decision table below where the Customer Status and Purchase Amount are condition columns?

Question

Options

• A4
• B6
• C7

• A
  75% (45)
• B
  15% (9)
• C
  10% (6)

Explanation

Option A is correct because in a decision table, each rule column represents exactly one business rule - if the table contains 4 rule columns, it captures 4 business rules, regardless of how many condition rows exist. Counting business rules means counting the columns that define unique combinations of condition values and their corresponding actions.

Option B (6) is a common mistake from adding the number of distinct condition values across both columns (e.g., 2 + 4 = 6) rather than counting rule columns directly. Option C (7) likely results from counting all cells in a specific section of the table - such as condition entries plus action entries - rather than the number of distinct rules.

Memory tip: Think of each rule column as a separate "if-then scenario" - the answer to "how many rules?" is always the number of columns, not the number of rows, cells, or condition values.

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