A witness to a hit-and-run accident told the police that the license number contained the letters RZH followed by a letter and 3 digits, the first of which is a 7. If the witness cannot recall the last 4th letter and the last 2 digits, but he is certain that all 3 digits are different, find the maximum number of automobile registrations that the police may have to check.

Q: Test the claim that a greater proportion of all young adults moved back in with their parents in…

A: Let p1 and p2 be the two population proportions in years 2012 and 2000 respectively.Given…

Q: the state department of transportation decides to change the plates to have three letters followed…

A: Given query is to find how many plates are possible if three latters followed by two digits.

Q: If we make a list of any four consecutive Fibonacci numbers, twice the third number minus the fourth…

A:

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

A: The question is about counting theory Given : The license no. contains letter "MTS " followed by 3…

Q: How many license plates consisting of three letters followed by three digits contain no letter or…

A: Here we have to find  out the combination of licence plate where repetition  of  letters and digits…

Q: Ted Williams played for the Boston Red Sox from 1939-1960.  Many people credit him with being the…

A: We have to find a regression equation of Z on X excluding the data for the war years.

Q: A phone number is a 7-digit that does not start with 0. Call a phone numbers that make up of exactly…

A: According to the permutation rule, if r distinct items are to be chosen from n items without…

Q: A person is 4 years old and his sister is half his age, so if this person is a hundred years old,…

A: Given: Age of the person = 4 years Age of the sister = 2 years (half of that of person's age)…

Q: the final exam score is higher. If a student's four test scores are 81, 65, 34, and 88, what is the…

A:

Q: A witness on a hit and run incident cannot recall the whole plate number of the car who hit an old…

A: Given that in hit and run case an old woman remembered is the plate number starts with TIP and the…

Q: Your friend hands you his iPhone and wants you to attempt to unlock it on the first try. How many…

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Q: A witness to a hit-and-run accident immediately reported to the police, although he could no longer…

A: Given that a license plate contained three letters, and the second letter was anything after T. The…

Q: Some states have a single area code for the entire state. Two such states have area codes where one…

A: The sum of two codes is 1203.  To find the two codes.

Q: Mr. Imperfecto, a math teacher, gives a test to a class of 17 students.  The average grade on the…

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Q: If the largest of 89 consecutive integers is 327, what is the smallest?

A: It is given that largest to the 89 consecutive integers is 327. We need to find the smallest integer…

Q: The first three digits of a 10-digit phone number make up the area code for the number. How many…

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Q: How many Licence plates of two letters followed by three digits can be made if the letters and…

A: Total no. of letter from A-Z is =26Total no. of digits from 0-9=10

Q: A "S number" is a positive even number that is not the product of two even numbers. A "B number" is…

A: Given: S number= positive even number that is not the product of two even numbers,  B number=an…

Q: A seven chats he insurance account number must be five letters of the alphabet followed by a…

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Q: Professor Chauvet wants to know how quickly her students can type out a text message. So that…

A: The objective is to identify which of the given choices is best measure to describe the center of…

Q: A realtor uses a lock to store the keys to a house that is for sale. The access code for the lock…

A: In this case, the number of ways to fill 1st digit is 9 except the digit 5.

Q: If the largest of 89 consecutive integers is 327, what is the smallest?

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Q: A realtor uses a lock box to store the keys to a house. The access code for the lock box consists of…

A: A permutation is the arrangement of elements. For example, three persons viz. A, B and C can be…

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.