A computer program requires the user to enter a 7-digit registration code made up of the digit 1,2,4,5,6,7, and 9. Each number has to used, and no number can be used more than once. a. How many different registration codes are possible? b. What is the probability that the first three digits of the cod NOT be even? c. Do you thing the probability is more like or less like to happen for part B, why?

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