Correct option is (D) 82Solution:Pattern of series can be:4 - 2 = 210 - 4 = 628 - 10 = 18The differences are increasing by a factor of 3 each time (2 × 3 = 6 , 6 × 3 = 18 , 18 × 3 = 54)Lets continue this pattern28 + 18 × 3 = 28 + 54 = 82Therefore, the next number in the sequence in 82