$A$ is a 3 × 2 matrix and $B$ is a 2 × 4 matrix. What is the order of $AB$?

Explanation

1. 01

   $AB$ is defined: $A$ has 2 columns and $B$ has 2 rows.

2. 02

   The product takes the rows of $A$ and the columns of $B$: $3 \times 4$.