Select the correct option that will fill in the blank and complete the series.
2, 5, 7, 12, ?, 31, 50
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 19.
Given series: 2, 5, 7, 12, ?, 31, 50
The logic used here is:
2 + 3 = 5
5 + 2 = 7
7 + 5 = 12; (3 + 2)
12 + 7 = 19; (2 + 5)
19 + 12 = 31; (5 + 7)
31 + 19 = 50; (7 + 12)
The missing term in the series is 19.
Hence, the correct answer is 19.