4. Let A= (a) 3/2 (b) 3 (c) -3/2 (d) -1/2 1 3 24 The element in the (1,2) position of A- is: 1 (e) A does not exist. -2 3 5. Let A= -1 The element in the (1,2) position of A- is: (a) 3/4 (b) -3/2 (c) 2/3 (d) -1/2 (e) A does not exist. 6. Let A = 1-1-2 2-3 -5 -1 3 5 (a) A-1 does not exist. (b) 3 (c) -2 (d) 1 (e) 2/3 The element in the (1,2) position of A- is: 7. Let A= (a) -7 (b) 4 113 3 5-1 3 13 -6 The element in the (1,1) position of A- is: (c) -1/2 (d) 3 (e) A-1 does not exist. 8. Let A = 10 2 -12-2 02 1 The element in the (1,3) position of A-1 is: (a) 1 (b) -2 (c) 1/2 (d) -5