What is a lotto range of sums? How do I find the sum range for my lotto game? The range of sums for a lottery is the set of sums that is possible to be made from the sum of the numbers in a number combination. For example, the range of all possible sums in a 49-number pick-6 lotto game is from 21 and 279. Plotting all the number of combinations that could be made with the various sums would produce a bell curve with the sums 21 and 279 at either end. In a 6/49 game, there is only one six-number combination that adds up to 21: 1 + 2 + 3 + 4 + 5 + 6 = 21. And, in the 6/49 Lotto game, only one six-number combination adds up to 279: 44 + 45 + 46 + 47 + 48 + 49 = 279. Those two combinations have the smallest and largest possible sums, and they occur only once--at the tail ends of a bell curve, making it virtually impossible for either of those groups of numbers to be drawn as a winning combination. For best results, choose a lotto combination that falls within your lotto's most probable range of sums, or the sums that occur most often and are at the top of the bell curve.