Question : Directions: In the following question, select the missing number from the given series. 17, 34, 51, ?, 85, 102
Option 1: 68
Option 2: 70
Option 3: 74
Option 4: 78
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Correct Answer: 68
Solution : Given: 17, 34, 51, ?, 85, 102
Add 17 in each number to get the required missing number – 17 + 17 = 34; 34 + 17 = 51; 51 + 17 = 68; 68 + 17 = 85; 85 + 17 = 102
So, 68 is the required missing number in the series. Hence, the first option is correct.
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