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.
 2 , 3 , 4 , 5 , 6 , 4 , 8

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This is an alternating addition series with a random number, 4, interpolated as every third number.
Correct Option: D
This is an alternating addition series with a random number, 4, interpolated as every third number. In the main series, 1 is added, then 2 is added, then 1, then 2, and so on.
 61 , 57 , 50 , 61 , 43 , 36 , 61

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This is an alternating repetition series, in which a random number, 61, is interpolated as every third number into an otherwise simple subtraction series.
Correct Option: E
This is an alternating repetition series, in which a random number, 61, is interpolated as every third number into an otherwise simple subtraction series. Starting with the second number, 57, each number (except 61) is 7 less than the previous number.
 6 , 20 , 8 , 14 , 10 , 8 , 12

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This is an alternating addition and subtraction series. In the first pattern, 2 is added to each number to arrive at the next;
Correct Option: D
This is an alternating addition and subtraction series. In the first pattern, 2 is added to each number to arrive at the next; in the alternate pattern, 6 is subtracted from each number to arrive at the next.
 11 , 16 , 21 , 26 , 31 , 36 , 41

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In this simple addition series,
Correct Option: D
In this simple addition series, each number is 5 more than the previous number.
 4 , 7 , 26 , 10 , 13 , 20 , 16

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Two patterns alternate here, with every third number following the alternate pattern. In the main series, beginning with 4, 3 is added to each number to arrive at the next.
Correct Option: E
Two patterns alternate here, with every third number following the alternate pattern. In the main series, beginning with 4, 3 is added to each number to arrive at the next. In the alternating series, beginning with 26, 6 is subtracted from each number to arrive at the next.