Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
108, 99, 88, ?, 60, 43
Option 1: 76
Option 2: 75
Option 3: 78
Option 4: 77
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Correct Answer: 75
Solution :
Given:
108, 99, 88, ?, 60, 43
In the above-given series, subtract consecutive odd numbers (starting from 9) –
108 – 9 = 99; 99 – 11 = 88; 88 – 13 = 75; 75 – 15 = 60; 60 – 17 = 43
So, 75 is the missing number of the series. Hence, the second option is correct.
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