A witness to a hit-and-run accident told the police that the license plate number contained the letters BDD followed by 4 digits, the first of which was a 4. If the witness cannot recall the last 3 digits, but is certain that all 4 digits are different, find the maximum number of automobile registrations that the police may have to check.

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A: Answer:72 Explanation: First digit=2 No.of digits=10 ie, (0,1,2,3,4,5,6,7,8,9) Now possibilities…

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Q: A witness to a hit and run accident told the police that the license number contained the letters…

A: number of digits  = (0,1,2,3,4,5,6,7,8,9)  total number of digits = 10 Out of 10 digits we know the…

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Q: 2. Find two nonnegative numbers whose sum is 2022 and whose sum of squares is as large as possible

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