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Percentage Bases and Successive Changes: Avoid the Common Traps
SSC CGLQuantitative Aptitude
Identify the correct percentage base, distinguish percentage points from relative change, and use multipliers to combine or reverse successive changes.
Updated 19 Sept 2026
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Divisibility by 3, 9 and 11: Rules, Missing Digits and Common Traps
SSC CGLQuantitative Aptitude
Learn divisibility tests for 3, 9 and 11, find every permitted missing digit, and avoid common mistakes through worked examples and practice questions.
Updated 19 Sept 2026
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