Matrices Self-study Quiz

5 Questions | Attempts: 210
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A short quiz on matrices


Questions and Answers
  • 1. 

    What type of matrix is this?[ 0 0 0][ 0 0 0] 

    • A.

      Zero Matrix

    • B.

      Equal Matrix

    • C.

      Row Matrix

    • D.

      Column Matrix

    Correct Answer
    A. Zero Matrix
  • 2. 

    This is Part 1 of this question.Let A = [  3    4   12 ]      [ -19  8    7  ]B = [  5   9    2  ]      [  1   7    6  ] What's A + B ?

    • A.

      [ 9 12 16 ] [ 18 -15 13 ]

    • B.

      [ 8 13 14 ] [ -18 15 13 ]

    • C.

      [ -2 -5 10 ] [ -20 1 1 ]

    • D.

      [ 15 36 24 ] [ -19 56 42 ]

    Correct Answer
    B. [ 8 13 14 ] [ -18 15 13 ]
  • 3. 

    This is Part 2 of this question.Let A = [  3    4   12 ]      [ -19  8    7  ]B = [  5   9    2  ]      [  1   7    6  ]  A + B = [    8    13    14  ]             [  -18   15    13  ]  C = [  4   5   ]      [  8   3   ]      [  1    6   ] What is CB?

    • A.

      [ 15 28 91] [ 12 48 32] [ 38 71 22]

    • B.

      [ 71 38 22] [ 94 43 34] [ 12 48 32]

    • C.

      [ 24 70 37] [ 46 90 32] [ 17 59 37]

    • D.

      [ 25 71 38] [ 43 93 34] [ 11 51 38]

    Correct Answer
    D. [ 25 71 38] [ 43 93 34] [ 11 51 38]
  • 4. 

     This is Part 3 of this question.Let A = [  3    4   12 ]      [ -19  8    7  ]B = [  5   9    2  ]      [  1   7    6  ]               A + B = [    8    13    14  ]                          [  -18   15    13  ]   C = [  4   5   ]      [  8   3   ]      [  1    6   ]               CB = [ 25 71 38]                        [ 43 93 34]                        [ 11 51 38]             Let   D = [  7   8   ]      [  2   1   ]      [  9    5   ]       [ 10  6   ]   Which combination is impossible?  

    • A.

      AC

    • B.

      C + D

    • C.

      DB

    • D.

      A + B

    Correct Answer
    B. C + D
  • 5. 

    In Greenwood Secondary School, students' grades are based on:50% on Tests, 30% from Assignments and 20% - based on quizzes.Write a matrix to show and express the different percentages together.

    Correct Answer
    [ 5 3 2]
    [ 5 ] [ 3 ] [ 2 ]
    [ 5 ] [ 3 ] [ 2 ] or [ 5 3 2]

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  • Current Version
  • Mar 19, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 09, 2009
    Quiz Created by
    Yxgwee1994
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