Which of the following numbers will replace the question marks (?) in the given series?
10, 20, 15, ?, ?, 30, 25, 35, 30
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 25, 20.
Given series: 10, 20, 15, ?, ?, 30, 25, 35, 30
The series follows this pattern:
10 + 10 = 20
20 - 5 = 15
15 + 10 = 25
25 - 5 = 20
20 + 10 = 30
30 - 5 = 25
25 + 10 = 35
35 - 5 = 30
So, the missing terms in the series are 25, 20.