Set operations – Match operations with symbols List I (Operation) A. Set equality B. Set inclusion (subset or equal) C. Set intersection D. Set difference List II (Symbol) − = ⊆ (written here as ‘‘<=’’) ∩ (written here as ‘‘*’’) Choose the correct mapping.

Introduction / Context:
Set theory uses standard symbolic notation. Many exams test recognition of these symbols, even if typeset constraints substitute ASCII forms (for example, using ‘‘’’ for intersection or ‘‘<=’’ for subset-or-equal).

Given Data / Assumptions:

• Equality between sets uses ‘‘=’’.
• Subset or equal uses ‘‘⊆’’ (represented here as ‘‘<=’’).
• Intersection uses ‘‘∩’’ (represented here as ‘‘’’).
• Difference uses ‘‘−’’.

Concept / Approach:

Translate the ASCII stand-ins to the canonical math symbols, then match each operation to its symbol. Equality → ‘‘=’’; inclusion → ‘‘⊆’’; intersection → ‘‘∩’’; difference → ‘‘−’’.

Step-by-Step Solution:

Verification / Alternative check:

Check with standard references or any discrete math text; the correspondence is universal.

Why Other Options Are Wrong:

Any option that swaps equality with inclusion or intersection with difference contradicts standard definitions.

Common Pitfalls:

Confusing subset ‘‘⊆’’ with proper subset ‘‘⊂’’; using ‘‘*’’ as multiplication instead of the stand-in for ‘‘∩’’ when typesetting is limited.

Final Answer:

A-2, B-3, C-4, D-1.