Chapter 4: Mathematical Operations
Introduction
Mathematical Operations measure analytical ability through symbol manipulation. Rather than performing simple arithmetic, candidates must replace given mathematical operators with alternative symbols and make the equation logically correct. This topic appears in nearly every reasoning section of Aptitude Questions for Competitive Exams.
Types of Questions Asked
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Symbol Substitution: Replace operations such as +, −, ×, ÷ with others.
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Equation Correction: Insert operators to make an equation true.
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Mixed Operations: Involve multiple symbol changes simultaneously.
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Sign Interchange: Interchanging numbers or operations to maintain balance.
Preparation Tips
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Check for BODMAS rule consistency.
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Start solving from brackets or leftmost terms.
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Always test the modified operation before concluding.
Why It’s Important
This section strengthens numerical reasoning and enhances a candidate’s logical handling of equations under pressure.