Although the four numbers in Similar Spreads are the same , the order of the numbers in a Similar Spread is different.
The Two Following Sets of drawing numbers are made up Examples.
The Spread is simply the difference between adjacent numbers. For example:
40-22 = 18
49-40 = 9
67-49 = 18
70-67 = 3
This Spread is: 18:09:18:03.
The Spread in this second example draw is simply the differences between adjacent numbers.
23-5 = 18
26-23 = 3
44-26 = 18
53-44 = 9
This Spread is: 18:03:18:09.
The the differences between adjacent numbers in each example draw are the same. The order of the Spread numbers are not the same.
Spread 18:09:18:03...Spread 18:03:18:09. The Spreads are Similar but not Exact.