A database system assigns a 32 character ID to each record where each character is either a number from 0 to 9 or a letter from

Question

A database system assigns a 32 character ID to each record where each character is either a number from 0 to 9 or a letter from A to F Assume that each number or letter being selected is equally likely Find the probability that at least 20 characters in the ID are numbers Use Excel to find the probability Round your answer to three decimal places

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