A stock table as a matrix
A stock table as a matrix
Secondary 4
4 marks
A sports shop records the numbers of balls in stock at its two branches.
| Jurong | Tampines | |
|---|---|---|
| Football | 14 | 9 |
| Basketball | 6 | 11 |
| Volleyball | 8 | 5 |
- Write down a matrix \(B\) for the table, with rows in the order football, basketball, volleyball and columns in the order Jurong, Tampines. State the order of \(B\).[2]
- State the entry in row 3, column 2 of \(B\) and explain what it represents.[2]
Solution:
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Answer:(a) \(B=\begin{pmatrix}14&9\\ 6&11\\ 8&5\end{pmatrix}\), order \(3\times2\) (b) \(5\): 5 volleyballs in stock at the Tampines branch
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