In Lotto (the UK lottery), you pick 6 numbers from a pool of 49. How many tickets would you need to guarantee at least one match of 3 numbers?
Wikipedia shows the probability of matching 3 numbers at 55:1. Does that mean if you buy 55 tickets you are guaranteed to get at least one match?
(P.S. I did search here and find another lottery question, possibly asking the same thing - but obviously didn't understand that.)