i hope u can show the working with correct answer

SET 1 QUESTION 3 QUESTION ! (a) The sum of the first n terms of an arithmetic series is !(5n' -n) Given matrix A= 4 p q (1) Write down an expression for the sum of the first n - 1 terms. [ 2 marks ] (a) State the values of p and q if A is a skew-symmetrical matrix. [2 marks ] (C2, CLO1, MQF LODI) (CI, CLOI, MQF LOD 1) (ii) Hence, show that the series is an arithmetic series. [ 3 marks ] (b) Given p=1&q=-1. (C2, CLOI, MQF LODI) i) Find the cofactor of the third row. [3 marks ] (C2, CLO1, MQF LOD 1) (b) The sixth term and the third term of a geometric series are - and ii) Hence, find the determinant of matrix A. | 2 marks ] 486 18 respectively. (C2, CLO1, MOF LOD 1) (1) Find the common ratio of the series. [ 2 marks ] 6 (C2, CLO1, MQF LODI) iii) By using properties of determinant, find the value of 2 -1 -3 5 0 (ii) Determine the smallest integer value " such that 4