A series is the value you get when you add up all the terms of a sequence, this value is called the sum. 1. (a) 13 (6) 11 (c) 8 (d) -3 2. 5. 3. 4. The nth term of a sequence is given by (-1) 2 find the sum of the second and third term (a) -2 (b) | (c) 2 The sum of the I" and 2 the 5th and 6th (a) 11 (b) 20 (c) 21 (c) 21 (WAEC 1994) The 2nd and 5th term of GP are 6 and 48 respectively fine the sum of the first four terms (a) -45 (b) 15 (c) 45 (WAEC 1994) Find the nth term of the AP 11, 4 -3 = 18-nn (d) Un = 417n (a) Un = 19+7n (b) Un=19-17 (c) Un Find the 9th term of Ap, 18, 12, 6, 0, -6 (WAEC 1996) (a) -54 (b) -30 (c) 30 (d) 29 The sum of the first 6 term of an AP is 72 and the sum of the next 4 terms is 71. Find the AP (work it out) (WAEC 1992) 10(a) What is the 25th term of 5, 9, 13 6. 7. 8. 9. Find the 8th term of the AP-3, -1, 1. (WAEC June 1988) If the second and fourth terms of a Gp are 8 and 32 respectively, what is the sum of the first fourth term? (a) 28 (b) 40 (c) 60 (d) 80 (WAEC June 1989) Find the th term of an AP whose first term is 2 and the common difference is 0.5. (a) 0.5 (b) 2.5 (c) 3.5 (d) 1.5 (WAEC 1990) (d) 3 term of an AP is 4 and the 10° term is 19. Find the sum of (WAEC 1995) (b) Find the 5th term of 8/0; 4/3 2 (c) The 3rd and 6th term of a Geometric progression (GP) are 48 and 14%, respectively write down the first four terms of the G.p (WAEC 1993) BIOLOGY of Dorphic and Anaerobic Respiration)​