This is an alternating addition series that adds 5, then 2, then 5, and so on.

Correct Option: C

This is an alternating addition series that adds 5, then 2, then 5, and so on.

In this simple subtraction with repetition series, each number is repeated,

Correct Option: D

In this simple subtraction with repetition series, each number is repeated, then 3 is subtracted to give the next number, which is then repeated, and so on.

Here, there are two alternating patterns, with every other number following a different pattern.

Correct Option: B

Here, there are two alternating patterns, with every other number following a different pattern. The first pattern begins with 13 and adds 2 to each number to arrive at the next; the alternating pattern begins with 29 and subtracts 3 each time.

This is an alternating addition series, with a random number, 35, interpolated as every third number.

Correct Option: C

This is an alternating addition series, with a random number, 35, interpolated as every third number. The pattern of addition is to add 2, add 5, add 2, and so on. The number 35 comes after each “add 2” step.

This is an alternating subtraction series, which subtracts 5, then 2, then 5, and so on.

Correct Option: E

This is an alternating subtraction series, which subtracts 5, then 2, then 5, and so on.