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GMAT Permutations and Combinations — practice questions — page 2

Explore 34 free Permutations and Combinations questions in GMAT Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Permutations and Combinations questions and exercises with answers

Showing questions 31–34 of 34.

One word is wrongRead the answer and worked solution →Permutation and combinationRead the answer and worked solution →Spot the false statementRead the answer and worked solution →Order the counting build upRead the answer and worked solution →

Worked practice questions

One word is wrong

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Questions
  1. Statement parts
    1. In
    2. a
    3. combination
    4. order
    5. is
    6. important
    Correction
    not important
    Incorrect part
    important
  2. Statement parts
    1. Zero
    2. factorial
    3. is
    4. defined
    5. as
    6. zero
    Correction
    one
    Incorrect part
    zero
  3. Statement parts
    1. The
    2. counting
    3. principle
    4. adds
    5. the
    6. ways
    Correction
    multiplies
    Incorrect part
    adds
  4. Statement parts
    1. A
    2. permutation
    3. ignores
    4. the
    5. order
    Correction
    fixes
    Incorrect part
    ignores
Instructions
Tap the single word that makes the sentence false.
_Source: syllabus Mathematics, Ch 6 'Permutations and Combinations'_

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Permutation and combination

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Left
Permutation
Items
  1. Region
    Permutation
    Item
    Order is kept
  2. Region
    Permutation
    Item
    XY differs YX
  3. Region
    Combination
    Item
    Order dropped
  4. Region
    Combination
    Item
    XY equals YX
  5. Region
    both
    Item
    Takes r from n
  6. Region
    both
    Item
    Uses factorials
Right
Combination
Instructions
Drop each property into its count, or into the overlap.
_Source: syllabus Mathematics, Ch 6 'Permutations and Combinations'_

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Spot the false statement

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Questions
  1. False statement
    A combination also fixes the order
    Statements
    1. A combination also fixes the order
    2. Zero factorial equals one
    3. A permutation fixes the order
  2. False statement
    It works only for exactly two events
    Statements
    1. The counting principle multiplies the ways
    2. It works only for exactly two events
    3. Three pants and two shirts give six pairs
  3. False statement
    The lock allows a digit to repeat
    Statements
    1. The letters of ROOT are not all different
    2. The lock has four wheels
    3. The lock allows a digit to repeat
  4. False statement
    Listing every case is the quickest method
    Statements
    1. Listing every case is the quickest method
    2. A handshake pair has no order
    3. Factorial is a product of natural numbers
Instructions
Two statements are true and one is false. Tap the false one.
_Source: syllabus Mathematics, Ch 6 'Permutations and Combinations'_

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