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This is when you make up numbers to insert into a question.
This will usually occur when there are variables
in the question and variables in the answer choices as well
– questions so abstract that you shake your head when reading them!
Pick smart numbers. The
numbers you choose for Plug In/Testing Numbers should fit the question's parameters.
For example, if the question asks for an integer, you should insert
integers. Usually try plugging in a few different numbers (positive,
negative, zero, etc.). When testing numbers for Plug-In, always try picking 0, -2, +2, fractions, etc.. or any numbers that may be particular to the question. These will help check your answers. Pick a variety of numbers to make sure that you are exploring all possible reasonable scenarios.
Plug in (Testing Numbers) Pros and Cons
- Used very effectively in Data Sufficiency questions to test if the statements are sufficient. Use Testing Numbers constantly on Data Sufficiency as you use Backsolve constantly on multiple choice questions.
- On some geometry questions
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