Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
67, 57, 49, 43, 39, ?
Option 1: 37
Option 2: 35
Option 3: 36
Option 4: 33
Correct Answer: 37
Solution :
Given:
67, 57, 49, 43, 39, ?
Subtract even numbers in decreasing order starting from 10 to the previous number, to get the required missing number in the series –
67 – 10 = 57; 57 – 8 = 49; 49 – 6 = 43; 43 – 4 = 39; 39 – 2 = 37
So, 37 is the missing number in the series. Hence, the first option is correct.
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