അടുത്ത സംഖ്യ ഏത് ? 9,20,42,86,------ A174B147C137D172Answer: A. 174 Read Explanation: 9 × 2 + 2 = 20 20 × 2 + 2 = 42 42 × 2 + 2 = 86 86 × 2 + 2 = 174Read more in App