Look at this series: 544, 509, 474, 439, ... 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.

This is a simple addition series. Each number increases by 2.

This is an alternating multiplication and subtracting series: First, multiply by 2 and then subtract 8.

In this simple addition series, each number increases by 0.8.

This is a simple alternating subtraction series, which subtracts 2, then 5.

This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

This is a simple multiplication series. Each number is 3 times more than the previous number.

In this simple subtraction series, each number decreases by 0.4.

8 x 1 - 2 = 6
6 x 2 - 3 = 9
9 x 3 - 4 = 23
23 x 4 - 5 = 87
87 x 5 - 6 = 429 ...

Parsley, basil, and dill are types of herbs. Mayonnaise is not an herb.