Show all working or steps. For questions which require units, giv answers in the units stated. Give your answers in 2 decimal places otherwise stated. 1. Write down the first 15 prime numbers (2 mark 2. Prime factorise 542963 (2 mark 3. Find the HCF of 1224 and 6358 (4 Mark 4. Find the LCM of 204 and 34 (4 Marks 5. Given that A = 23 x 72 and B = 23 x 5 x 7, C = 24 x 7 x 11, find a) HCF of A, B and C (2 Marks b) LCM of A, B and C. (2 Marks 6. Simplify 3(-3 3x- 35)-1 (3 Marks) 34 (-xy-1)4 O N 82.F7. Factorise the following: a 18x2 - 32 + 16y - 2y? b) 30x2 - 4x - 48 8. Simplify the following fraction: 2x 4x-y a) 3x-2y 61-4 2 b) 3a+46 04 Q2-1682 9. Solve the following equations: a 9x2 = 45x b) 8x2 - 2x - 21 = 0 - End of Paper