Bharatiya Pathshala
Opening preparation notes...
Data Insights / GMAT question formats
Two-Part Analysis: concepts, worked examples and practice.
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Start with the basics
Two-part analysis asks you to choose two answers that satisfy a shared rule. Check the pair together.
Choose two positive whole numbers whose sum is 7 and difference is 1.
Remember: An option that fits one condition alone may fail when paired with the other answer.
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Practise sufficiency, table analysis, graphics, multiple sources and paired choices. Learn each response format using GMAC official samples.
Explain the idea in your own words before opening the answer. Then apply it to the example.
Explain the main rule in linked choices, then apply it to a small example. State the assumption that makes your reasoning valid.
Review the noteTwo-part analysis can require a pair of answers that satisfy the same conditions. Choosing the best-looking answer in each column independently may fail.
Worked example: Two quantities sum to 10 and differ by 4. Solve x+y=10 and x-y=4 to get x=7,y=3. The pair must satisfy both equations together.
Explain the main rule in quantitative and verbal trade-offs, then apply it to a small example. State the assumption that makes your reasoning valid.
Review the noteTranslate each criterion into a constraint, then test candidate pairs jointly. A feasible choice is not automatically optimal unless the objective says so.
Worked example: One plan is cheap but slow, another fast but costly. If a deadline and budget are fixed, first remove infeasible plans; then compare remaining plans on the stated objective.
BEGINNER
The pair 3 and 4 satisfies the sum and difference together.
Smaller = (sum − difference)/2
Larger = (sum + difference)/2
Source record: Bharatiya Pathshala — original illustrated lessons.