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55 x 54 x 53 x 52 x 51 x 50 = 20,872,566,000 possible combinations

This includes counting combinations such as 1,2,3,4,5,6 and 1,2,3,4,6,5 and 6,5,4,3,2,1 and 4,2,3,1,5,6 as different. In a lottery, these are all considered to be the same. To get the number of combinations without regard to order, divide that number by 6!=6x5x4x3x2 which is 28,989,675

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Q: How many number combinations in lotto 655?
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