Q16Short answerExercise 5.2
16 th and + 1 th, i.e., the 8th term and the 9th term. 2 2 ARITHMETIC PROGRESSIONS 51 a8 = a + 7d = –11 + 7 × 4 = 17 a9 = a + 8d = –11 + 8 × 4 = 21 So, the values of the two middle most terms are 17 and 21, respectively.
16 th and + 1 th, i.e., the 8th term and the 9th term. 2 2 ARITHMETIC PROGRESSIONS 51 a8 = a + 7d = –11 + 7 × 4 = 17 a9 = a + 8d = –11 + 8 × 4 = 21 So, the values of the two middle most terms are 17 and 21, respectively.