Multiple choice Directions: Find the wrong number in the following series. 1 2.5 5.5 10 16 20.5 32.5 2.5 5.5 20.5 32.5 Reveal answer Fill a bubble to check yourself C Correct answer Explanation 1 + 1.5 = 2.5 2.5 + 3 = 5.5 5.5 + 4.5 = 10 10 + 6 = 16 16 + 7.5 = 23.5 23.5 + 9 = 32.5 Thus, 16 + 7.5 = 23.5