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- Manipulate Algebraically
- Use Conceptual understanding
- Play devils advocate and pick numbers
- Just do it
Play Devils advocate
Don't pick the same types of numbers over and over, but rather pick the types of numbers(negatives,non negatives,0,large numbers) that are likely to give the other answer in a yes or no question.
Number picking should rarely be used in DS. Use it only when needed.
When something is given to you in one form in DS, look at it in multiple forms to see which one might unlock the problem.
Don't take things at face value in DS. Always look to apply all of the strategies outlined in this section.