GMAT Uncovered (Manhattan Prep GMAT Strategy Guides) by Manhattan GMAT

Author:Manhattan GMAT
Language: eng
Format: azw3
Publisher: Manhattan Prep Publishing
Published: 2013-04-19T04:00:00+00:00

Note: PS = Problem Solving; DS = Data Sufficiency

Problem Type

Technique

When we can use the technique

PS

Estimation

when the answers are in the form of real numbers

PS

Test real numbers

when the answers are in the form of variable expressions (e.g., 3x + 5)

PS or DS

Test real numbers

when the problem tests pure theory; the solution is not tied to a specific real number

PS

Partial answer

when a number appears part-way through the calculations and is also in the answer choices, that number is almost never the right answer

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