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For example, when playing the Pick–6 Lotto, we must choose six numbers from the group 1 – 42. Obviously, we cannot repeat numbers. But more importantly, the order does not matter. In other words, we are not choosing a sequence like a serial number or password where we have a first number, then a second number, then a third, etc. We simply bubble in any six numbers on the card and if they come up in any order, then we win. We simply need a subset of size 6 from the group of 42.