Question : Directions: Select the number from among the given options that can replace the question mark (?) in the following series.
48, 54, 45, 51, 42, 48, ?
Option 1: 37
Option 2: 33
Option 3: 39
Option 4: 35
Correct Answer: 39
Solution :
Given:
48, 54, 45, 51, 42, 48, ?
Add 6 and subtract 9 alternately to obtain the next number in the series.
48 + 6 = 54; 54 – 9 = 45; 45 + 6 = 51; 51 – 9= 42; 42 + 6 = 48; 48 – 9 = 39
So, the missing number is 39. Hence, the third option is correct.
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