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Old 07-30-2007   #5
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Lightning does not know whether you have been struck previously. After you are struck, you have a 1 in 600,000 chance of being struck a second time.The probability of being struck twice can be worked out as follows.Consider 600,000 sets of events. In the first 599,999 you are never struck. In the last you are struck at least once. This is the 1 in 600,000 chance of being struck at least once. Make each of these sets 600,000 events. All of the first 599,999 sets of 600,000 events are "never struck"(359,999,400,000 events). In the last set of 600,000 events, the first 599,999 are "only struck once". The last is "struck more then once".This is a total of 360,000,000,000 events.The probabilities are:never struck: (599,999 in 600,000),or (359,999,400,000 in360,000,000,000)struck exactly once: (599,999 in 360,000,000,000),oressentially (1 in 600,000)struck more than once: 1 in 360,000,000,000 (1 in 360billion)