Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
36, 33, 39, 36, 42, 39, 45, ?
Option 1: 42
Option 2: 48
Option 3: 38
Option 4: 29
Correct Answer: 42
Solution :
Given:
36, 33, 39, 36, 42, 39, 45, ?
Subtract 3 and add 6 alternately to each term of the series to get the next term.
36 – 3 = 33; 33 + 6 = 39; 39 – 3 = 36; 36 + 6 = 42; 42 – 3 = 39; 39 + 6 = 45; 45 – 3 = 42
So, 42 is the missing number in the series. Hence, the first option is correct.
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