Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
72, 78, 89, 95, 106, 112, 123, ?
Option 1: 85
Option 2: 129
Option 3: 140
Option 4: 200
Correct Answer: 129
Solution :
Given:
72, 78, 89, 95, 106, 112, 123, ?
Add 6 and 11 alternatively to the previous number to get the next number.
72 + 6 = 78; 78 + 11 = 89; 89 + 6 = 95; 95 + 11 = 106; 106 + 6 = 112; 112 + 11 = 123, 123 + 6 = 129
So, the missing number of the series is 129. Hence, the second option is correct.
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