Matrices

Matrices Quiz

IB MYP Maths Extended: Quiz

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5 questions, one answer each

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  1. 1. What is the order of (123456)\begin{pmatrix}1&2&3\\ 4&5&6\end{pmatrix}?

    • A. 3×23\times2
    • B. 2×32\times3
    • C. 6×16\times1
    • D. 2×22\times2

  2. 2. Find (1234)+(0−152)\begin{pmatrix}1&2\\ 3&4\end{pmatrix}+\begin{pmatrix}0&-1\\ 5&2\end{pmatrix}.

    • A. (1−2158)\begin{pmatrix}1&-2\\ 15&8\end{pmatrix}
    • B. (1234)\begin{pmatrix}1&2\\ 3&4\end{pmatrix}
    • C. (0−186)\begin{pmatrix}0&-1\\ 8&6\end{pmatrix}
    • D. (1186)\begin{pmatrix}1&1\\ 8&6\end{pmatrix}

  3. 3. Find 3(2−104)3\begin{pmatrix}2&-1\\ 0&4\end{pmatrix}.

    • A. (6−3012)\begin{pmatrix}6&-3\\ 0&12\end{pmatrix}
    • B. (6−104)\begin{pmatrix}6&-1\\ 0&4\end{pmatrix}
    • C. (5237)\begin{pmatrix}5&2\\ 3&7\end{pmatrix}
    • D. (2−3012)\begin{pmatrix}2&-3\\ 0&12\end{pmatrix}

  4. 4. Find (1234)(56)\begin{pmatrix}1&2\\ 3&4\end{pmatrix}\begin{pmatrix}5\\ 6\end{pmatrix}.

    • A. (1739)\begin{pmatrix}17&39\end{pmatrix}
    • B. (524)\begin{pmatrix}5\\ 24\end{pmatrix}
    • C. (1739)\begin{pmatrix}17\\ 39\end{pmatrix}
    • D. (3917)\begin{pmatrix}39\\ 17\end{pmatrix}

  5. 5. Towns AA, BB and CC are all joined to each other by two-way routes. How many journeys from AA back to AA use exactly two routes?

    • A. 00
    • B. 22
    • C. 33
    • D. 66

Quiz