Let's clarify and resolve the number series step by step: Given Series: 2, 8, 5, 6, 8, ___, 11 We are to find the missing number at the 6th position. Step 1: List Positions Position Number 1 2 2 8 3 5 4 6 5 8 6 ? 7 11 Step 2: Analyze Odd and Even Positions Odd positions (1,3,5,7): 2, 5, 8, 11 pattern: 2 5 = +3 5 8 = +3 8 11 = +3 Consistent +3 pattern Even positions (2,4,6): 8, 6, ? pattern: 8 6 = -2 6 ? = ? If we assume a consistent -2 pattern (as odd positions are +3), then: 6 ? = -2 So, ? = 6 - 2 = 4 Final Answer: 4 This fits a clean and consistent pattern: Odd-positioned terms increase by 3 Even-positioned terms decrease by 2 Correct Option: 4