Which of the following numbers will replace the question mark (?) in the given series?
12, 23, 45, 56, 78, 89, 111, 122,?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e.144.
Given series: 12, 23, 45, 56, 78, 89, 111, 122,?
The series follows this pattern:
12 + 11 = 23
23 + 22 = 45
45 + 11 = 56
56 + 22 = 78
78 + 11 = 89
89 + 22 = 111
111 + 11 = 122
122 + 22 = 144
So, the next term in the series is 144.