Select the option that will correctly replace the question mark (?) in the series.
12, 22, 42, 82, ?
- A172
- B182
- C152
- D162
Solution & Step-by-step Explanation
Let us find the pattern by observing the differences between consecutive terms:
22−12=10
42−22=20
82−42=40
The differences are doubling each time: 10,20,40.
The next difference should be 40×2=80.
Therefore, the next number in the series is:
82+80=162
22−12=10
42−22=20
82−42=40
The differences are doubling each time: 10,20,40.
The next difference should be 40×2=80.
Therefore, the next number in the series is:
82+80=162