Logical Problems
Direction: Look carefully for the pattern, and then choose which pair of numbers comes next. Note also that you will be choosing from five options instead of four.
 40 , 40 , 31 , 31 , 22 , 22 , 13

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This is a subtraction series with repetition.
Correct Option: A
This is a subtraction series with repetition. Each number repeats itself and then decreases by 9.
 10 , 20 , 25 , 35 , 40 , 50 , 55

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This is an alternating addition series,
Correct Option: E
This is an alternating addition series, in which 10 is added, then 5, then 10, and so on.
 1 , 10 , 7 , 20 , 13 , 30 , 19

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Here, every other number follows a different pattern. In the first series, 6 is added to each number to arrive at the next.
Correct Option: C
Here, every other number follows a different pattern. In the first series, 6 is added to each number to arrive at the next. In the second series, 10 is added to each number to arrive at the next.
 75 , 65 , 85 , 55 , 45 , 85 , 35

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This is a simple subtraction series in which a random number, 85, is interpolated as every third number.
Correct Option: B
This is a simple subtraction series in which a random number, 85, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
 9 , 12 , 11 , 14 , 13 , 16 , 15

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This is a simple alternating addition and subtraction series.
Correct Option: E
This is a simple alternating addition and subtraction series. First, 3 is added, then 1 is subtracted, then 3 is added, 1 subtracted, and so on.