Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

GMAT: Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

The document Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT is a part of the GMAT Course Quantitative Aptitude for GMAT.
All you need of GMAT at this link: GMAT

MATH FORMULAS

Permutations:

Note: Multiple events means multiply! This rule applies to ALL permutation, combination and probability questions in some way.

No math formula required. Draw a picture, keep track of the results and multiply

Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

Combinations:

Combination Formula 

= Number of items
= Number of items to be selected 

Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

Example:

Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

Probability:

Probability = Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

“and” = Multiply
“or” = Add 

Example: 

Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT

The document Permutations, Math Formulas For GMAT Notes | Study Quantitative Aptitude for GMAT - GMAT is a part of the GMAT Course Quantitative Aptitude for GMAT.
All you need of GMAT at this link: GMAT

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