Identify Entry - Matrix and Value to Row Column Notation

Question

Which row-column notation describes the entry with this value?

$$\left[ {\begin{array} {c} 4 \ 11 \ 80 \ 46 \ 84 \end{array}  } ight] \qquad 	ext{value} = 80$$

Accepted Answer

$$a_{3,1}$$

Answer

$$a_{1,1}$$

Answer

$$a_{4,1}$$

Answer

$$a_{2,1}$$

Practice: Matrices