The sum of number combination refers to the total when you add all the six numbers in your betting choice.
Let's take the Philippine Lotto 6/42 winning result for December 29, 2007:
8 - 19 - 27 - 31 - 34 - 39
The sum of the numbers would be 8 + 19 + 27 + 31 + 34 + 39 which is equal to 158.
Did you know that 70% of all winning numbers in the Philippine Lotto 6/42 have a sum between 99 and 159?
Our example above belongs to that statistic. So the next time you choose your numbers, try to make the sum between 99 and 159.