Select the number from among the given options that can replace the question mark (?) in the following series.
6, 22, 70, 214, ?, 1942
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 646.
Given series: 6, 22, 70, 214, ?, 1942
The series follows this pattern:
6 + 16 = 22
22 + (16 × 3) = 22 + 48 = 70
70 + (48 × 3) = 70 + 144 = 214
214 + (144 × 3) = 214 + 432 = 646
646 + (432 × 3) = 646 + 1296 = 1942
So, the missing term in the series is 646.