Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series.
3, 6, 15, 42, 123, ?
Option 1: 366
Option 2: 362
Option 3: 368
Option 4: 365
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Correct Answer: 366
Solution :
Given:
3, 6, 15, 42, 123, ?
The pattern is as follows –
So, 366 is the missing number. Hence, the first option is correct.
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