Directions to Solve:
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
Explanation:
In this alternating repetition series, the random number 21 is interpolated every other number into an otherwise simple addition series that increases by 2, beginning with the number 9.
Directions to Solve:
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
Explanation:
This is a simple subtraction series. Each number is 6 less than the previous number.
Directions to Solve:
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
This alternating addition series begins with 3; then 1 is added to give 4; then 3 is added to give 7; then 1 is added, and so on.
Directions to Solve:
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
Explanation:
This is a simple addition series with a random number, 8, interpolated as every other number. In the series, 6 is added to each number except 8, to arrive at the next number.
Directions to Solve:
In each series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much?
Explanation:
This is a simple alternating subtraction series, which subtracts 2, then 5.