Getty Images Many of us know devoted Lotto players who stick to a set of numbers, such as family birth dates, they hold to be personal and unique. But what if hundreds of other players are making exactly the same choices? We analysed a Lotto New Zealand dataset spanning 400 million played numbers across 70 million lines – groups of six numbers chosen together or “six-tuples”, as we call them. We were interested to know just how players pick their numbers and whether, in the end, those choices re