Question : Directions: Which of the following four options will replace the question mark (?) in the following series? 8, 16, ?, 38, 41, 82
Option 1: 21
Option 2: 31
Option 3: 28
Option 4: 19
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Correct Answer: 19
Solution : Given: 8, 16, ?, 38, 41, 82
Multiply the numbers by 2 and add 3 alternatively to get the next number in the series – 8 × 2 = 16; 16 + 3 = 19; 19 × 2 = 38; 38 + 3 = 41; 41 × 2 = 82
So, 19 is the missing number of the series. Hence the fourth option is correct.
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