Key in the matrix answer

Exercise and reference answers

Questions

1. Answer

   12

   Question

   A matrix has 3 rows and 4 columns. How many elements does it have?

2. Answer

   15

   Question

   What is the determinant of the 2 by 2 matrix with rows 3, 0 and 0, 5?

3. Answer

   5

   Question

   What is the determinant of the 2 by 2 matrix with rows 2, 3 and 1, 4?

4. Answer

   4

   Question

   How many rows does a square matrix of order 4 have?

Instructions

Work out each answer and key it in on the pad.

Explanation