Permutations, Math Formulas For GMAT GMAT Notes | EduRev

Quantitative Aptitude for GMAT

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GMAT : Permutations, Math Formulas For GMAT GMAT Notes | EduRev

The document Permutations, Math Formulas For GMAT GMAT Notes | EduRev is a part of the GMAT Course Quantitative Aptitude for GMAT.
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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 GMAT Notes | EduRev

Permutations, Math Formulas For GMAT GMAT Notes | EduRev

Combinations:

Combination Formula 

= Number of items
= Number of items to be selected 

Permutations, Math Formulas For GMAT GMAT Notes | EduRev

Example:

Permutations, Math Formulas For GMAT GMAT Notes | EduRev

Probability:

Probability = Permutations, Math Formulas For GMAT GMAT Notes | EduRev

“and” = Multiply
“or” = Add 

Example: 

Permutations, Math Formulas For GMAT GMAT Notes | EduRev

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