Select the number from among the given options that can replace the question mark (?) in the following series.
33, 34, 30, 39, 23, 48, 12,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4. i.e. 61.
Given series: 33, 34, 30, 39, 23, 48, 12,?
The series follows this pattern:
33 + 12 = 33 + 1 = 34
34 - 22 = 34 - 4 = 30
30 + 32 = 30 + 9 = 39
39 - 42 = 39 - 16 = 23
23 + 52 = 23 + 25 = 48
48 - 62 = 48 - 36 = 12
12 + 72 = 12 + 49 = 61
So, the next term in the series is 61.