Question: A database system assigns a32 -character ID to each record, where each character is either a number from0 to9 or a letter fromA toF .

A database system assigns a32

-character ID to each record, where each character is either a number from0

to9

or a letter fromA

toF

. Assume that each number or letter being selected is equally likely. Find the probability that at least20

characters in the ID are numbers. Use Excel to find the probability.

  • Round your answerto three decimal places.

using excel

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