 Hello and welcome to this session. Evaluate the determinant 3-4-5-1-1-2-2-3-1. Now let us write the solution. We have 3-4-5-1-1-2-2-3-1 which is equal to 3 into 1-3 into minus 2 plus 4 1 minus 2 into minus 2 plus 5 3 minus 2 which is equal to 3 into 1 plus 6 plus 4 into 1 plus 4 plus 5 into 2 5 into 1 which is equal to 3 multiplied by 7 plus 4 multiplied by 5 plus 5 which is equal to 21 plus 20 plus 5 which is equal to 46. Therefore the required answer is 46. I hope you understood the problem. Bye and have a nice day.