Question : Directions: Select the number that can replace the question mark (?) in the following series. 40, 44, 22, 26, 13, ?
Option 1: 16
Option 2: 20
Option 3: 17
Option 4: 22
Correct Answer: 17
Solution : Given: 40, 44, 22, 26, 13, ?
Add 4 and divide the numbers by 2 alternately – 40 + 4 = 44; 44 ÷ 2 = 22; 22 + 4 = 26; 26 ÷ 2 = 13; 13 + 4 = 17
So, 17 is the missing number of the series. Hence, the third option is correct.
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