EM-2086

Displaying data in matrices

E Math · Secondary 4 · Medium · Displaying data in matrices

A company records the number of items sold in two shops, X and Y, over three days as follows:

- Monday: X sells 40, Y sells 55
- Tuesday: X sells 35, Y sells 60
- Wednesday: X sells 50, Y sells 45

This information is represented by a matrix

S

. Which of the following is

S

$\begin{pmatrix}40&55\\35&60\\50&45\end{pmatrix}$
$\begin{pmatrix}40&35&50\\55&60&45\end{pmatrix}$
$\begin{pmatrix}55&40\\60&35\\45&50\end{pmatrix}$
$\begin{pmatrix}40&55\\50&45\\35&60\end{pmatrix}$

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