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
Look at this series: 1.5, 2.3, 3.1, 3.9, ... What number should come next?
Answer: Option A
In this simple addition series, each number increases by 0.8.
Look at this series: 14, 28, 20, 40, 32, 64, ... What number should come next?
Answer: Option D
This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8.
Look at this series: 2, 4, 6, 8, 10, ... What number should come next?
This is a simple addition series. Each number increases by 2.
Look at this series: 201, 202, 204, 207, ... What number should come next?
In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.
Look at this series: 544, 509, 474, 439, ... What number should come next?
This is a simple subtraction series. Each number is 35 less than the previous number.
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