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There is one in serval hundreds million chances that two persons will have identical fingerprints. And there is one in serval billion chances that two persons will have identical DNA. Again I don’t know the sources of those claims, but it is often quoted in TV and detective kind of books. It is just a conceivable that there can be two identical snowflakes. I sometimes wander how the mathematicians come to these numbers. Ask them to calculate next draw Lotto numbers and they will tell you it is impossible. They would be dealing with random combinations of 48 numbers only, but they make prediction about random combinations of billions of possibilities
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