The mathematics test of three students before taking tutorial is 2, 3 & 5. But after taking tutorial

and long study the results of each student changed in to 12, 13 & 14 respectively. If the teacher
puts their result for comparison as matrix each student in column, it should be?

The matrix for the students' results before and after taking the tutorial would be:

Before After
2 12
3 13
5 14