CSAT (Aptitude)·Key Methods
Simple Ratios — Key Methods
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Version 1Updated 6 Mar 2026
Key Methods
Fundamental Principle of Proportionality
Ancient Greek Mathematics (Euclid)While not a legal judgment, the formalization of proportionality by ancient Greek mathematicians, particularly Euclid in his 'Elements', established the axiomatic basis for…
Principle of Unit Consistency in Ratios
Universal Mathematical ConventionThis principle dictates that for a ratio to be meaningful and valid, the quantities being compared must either be of the same unit or convertible to the same unit. For example,…