Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
85, 105, 126, 148, 171, 195, ?
Option 1: 530
Option 2: 220
Option 3: 420
Option 4: 280
Correct Answer: 220
Solution :
Given:
85, 105, 126, 148, 171, 195, ?
Add consecutive natural numbers to the previous term to obtain the next number of the series.
85 = 85 + 20 = 105; 105 = 105 + 21 = 126; 126 = 126 + 22 = 148; 148 = 148 + 23 = 171; 171 = 171 + 24 = 195; 195 = 195 + 25 = 220
So, the next term of the series is 220. Hence, the second option is correct.
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