Question : Directions: Which of the following four options will replace the question mark (?) in the following series?
12, 36, ?, 102, 100, 300
Option 1: 68
Option 2: 34
Option 3: 52
Option 4: 76
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Correct Answer: 34
Solution :
Given:
12, 36, ?, 102, 100, 300
Multiply by 3 and subtract 2 alternatively to get the next term of the series –
12 × 3 = 36; 36 – 2 = 34; 34 × 3 = 102; 102 – 2 = 100; 100 × 3 = 300
So, 34 is the missing number. Hence, the second option is correct.
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