A witness to a hit-and-run accident told the police that the license number
contained the letters RLH followed by 4 digits, the first of which is a 7. 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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Answer:
Factory produced 8000 toys
Two machines produced 20% of toys.
So they produced =1,600 toys.
Third machine produced 1800 toys
Total number of working and fine toys = 1,600+1,800=3,400 toys.
Toys which are bad and not working properly= 8000-3400=4600 toys.
Rest of your question is not understood.
Hope it helps you!
Because rest information is invalid as per to the Question. You need to put a proper Question first
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