Plugging in Numbers for Variables

[Bobbi]

I am studying for the GRE and it suggests plugging in numbers to quickly solve algebra problems with variables. It says to use nice, clean, easy to work with numbers... I want to pick 3 different numbers to use for each problem like this. What are good numbers to use? any negative numbers? A book says 0 and 1 are bad numbers and can lead to incorrect answers.

 

[tkhunny]

Tough call. It would depend on the values and on the particular problem. Can you post one? We can discuss the benefits and costs associated with the cheesy method suggested.

 

[mmm4444bot]

What is the set of clean numbers?

 

[Deleted member 4993]

What is the set of clean numbers?

Numbers that can be eaten, without washing - like nine (remember seven "ate" nine - that is why also other numbers are afraid of seven)