3) The access code for the safe in my office consists of 4 digits.The first digit must be odd or zero, the last digit must be even. How many different codes are available? Note: zero is neither odd nor even.

Q: 1. A school issues each student an ID with a unique code consisting of two lowercase Tolowed by…

A: The id will consist of a unique code with 5 characters to be filled. First, we will have two letters…

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A: Consider a telephone number with at most 15 digits. The telephone number must consist of a country…

Q: how many different 5-digit codes can be formed if the first digit must be an odd number, the second…

A:

Q: How many different phone numbers are possible in the area code 503, if the first number cannot start…

A: There are 10 numbers from 0 to 9. After the area code 503, there are 7 numbers. There are 8 other…

Q: 4. How many five-letter codes can be formed from the letters of the English alphabet if repetitions…

A: Solution: Number of English alphabet  letters = n= 26

Q: 15 E #1

A: There are 4 letters A, B, C and D.Here, use letter is allowed to use again.

Q: each character in a password is either a digit(0-9) or lowercase letter (a-z). how many valid…

A: There is total 10 digits, such that 0, 1, 3, …., 9 and there is total 26 lowercase letters, such…

Q: How many 3-letter codewords can be formed if: At least one of the letters is to be chosen from the…

A:

Q: how many secret codes can be formed consisting of five letters or four digits but not both

A:

Q: c) There are 5 airplanes ready to depart. Runway A and runway D are available. How Many ways can 2…

A: We Know that there are 5 airplanes ready to depart. Runway A and runway D are available. We have to…

Q: To gain access to his account, a customer using an automatic teller machine (ATM) must enter a…

A:

Q: 1. Haniemay wants to try all the 23 dishes and 6 desserts in offered in PUP lagoon but she is…

A: Combination is a way of selecting items from a collection under certain conditions. Here the order…

Q: In a certain state, each automobile license plate number consists of two letters followed by a…

A: There are 24 choices for each letter. (this explanation was already shown in the image you shared)…

Q: 1. To create an entry code for a push-button door lock, you need to first choose a letter and then,…

A: 26000 codes can be created

Q: In the United States, telephone numbers consist of a three-digit area code followed by a seven-digit…

A: Given problem Given that   In the United States, telephone numbers consist of a three-digit area…

Q: How many 6​-letter code words can be formed from the letters O, A, Y, H, K,W if no letter is​…

A: Given: 6 letters = {O, A, Y, H, K, W}

Q: To use an automated teller machine at a certain bank, you must enter a 3-digit code, using the…

A:

Q: b) How many three-digit phone prefixes are possible in which no digit appears more than once in each…

A: a) How many are three-digit phone prefixes that are used to represent a particular geographic area…

Q: 1. The plate number system for the four-wheeled vehicles in the country of Dominian consist of 3…

A: 1) Given Information: The plate number consists of 3 letters and 4 digits. The first letter…

Q: 1. If there are two ways to go to Pampanga from Manila and three ways to go to Bataan from Pampanga…

A: Manila to Pampanga : 2 ways Pampanga to Bataan : 3 ways From Batana to La Union : 5 ways     in how…

Q: c) A combination lock has 10 different single digit numbers to choose from and make a number with…

A: The number of total digits to choose in the lock are 10. The number of digits used to open the lock…

Q: 16 E #2

A: The act of arranging the members of a set into an order or sequence, if it is already in order, we…

Q: Assume a country has 3-digit area codes that all have 0 or 1 as the middle digit, do not have 0 or 1…

A: Solution: From the given information, 3-digit area code should be formed. The first digit do not…

Q: In the United States, telephone numbers consist of a three-digit area code followed by a seven-digit…

A: Given problem Given that   In the United States, telephone numbers consist of a three-digit area…

Q: Taking into account identical letters, how many ways are there to arrange the word PARVAMONSTRA that…

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Q: 18. A security company requires its employees to have a 7-character computer password that must…

A: We have 7 places which among 5 must be filled by letters and the remaining 2 must be filled by…

Q: To use an automated teller machine at a certain bank, you must enter a 4-digit code, using the…

A: Total available numbers = 9 To make 4 digit code

Q: Could you please provide answers to this question al

A: From the given information, the total number of cases is, n=534+528+881=1943. 1) 95% CI for the week…

Q: A library has 5000 books, and the librarian wants to encode each using a code- word consisting of 3…

A: Given, A library has 5000 books and the librarian wants to encode each book using a code-word…

Q: 2. At a certain company, access codes nust pe 4 composed of the 26 lower case letters of the…

A: Let           A=Access codes 4 to 6 symbolsA1=Access codes with 4 symbolsA2=Access codes with 5…

Q: 7. How many four-digit codes can be made out of the digits 0, 2, 4, 6, and 8 if repetition of digits…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer only…

Q: 1. A password consists of 5 letters (not case sensitive) followed by 2 digits. How many passwords…

A: 1. The password consists of 5 letters(not case sensitive) followed by 2 digits.

Q: How many different codes are​ available?

A: It is given that the code consists of four digits. The first digit cannot be zero and the last digit…

Q: How many 3 letter security codes can be made from the 4 letters A,B,C,D without using a letter…

A:

Q: A 5-digit PIN number is created. The only restriction on this number is that it cannot start with a…

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Q: A social security number has 3 digits, then 2 digits, then 4 digits.  If the first 3 digits can’t be…

A: To determine: Different possible cards can be made. Given data: A social security number has 3…

Q: Suppose a certain combination lock requires three selections of numbers, each from 1 through 20.…

A: a) For each number we have 20 choices. Each position is independent of other positions  So by…

Q: A lock has a code of 3 numbers between 1 and 10. If no numbers in the code are allowed to repeat,…

A: Answer - A  lock has a code of 3 numbers between 1 and 10. {1, 2, 3, 4, 5, 6, 7, 8, 9,10 }…

Q: To gain access to his account, a customer using an automatic teller machine (ATM) must enter a…

A: We will use basic combinatorics.

Q: San Jac must assign a new employee a 7 digit phone number, but the first three digits must be 526.…

A: In 7 digit phone number 3 digits are given. So (7-3)=4 digits we have to fill. There are 10 numbers…

Q: 4. If each Automated Teller Machine card of a certain bank has to have four different digits in its…

A:

Q: Each employee at a large company is to be issued a computer ID code that consists of three letters…

A: If we have to fill n boxes with no repetition with n objects then then there are…

Q: To use an automated teller machine at a certain bank, you must enter a 3-digit code, using the…

A: We want to find the number ways to make 3 digit number.

Q: A large corporation is concerned with security and identity theft.  So, instead of using workers’…

A: Topic = Permutation and combination

Q: How many three-letter code words can be constructed from the first ten letters of the Greek alphabet…

A: We have to find how many three-letter code words can be constructed from the first ten letters of…

Q: A company’s security policy requires each employee to have an ID number. The policy also requires…

A: The ID card has 6 digits and digits must not be repeated. There are 10 digits 0,1,2,3,4,5,6,7,8,9…

Q: As the customer base at OHaganBooks.com grows, IT manager Ruth Nabarro is thinking of introducing…

A: Here we have 2letters and then followed by 2 digitsAll the letters must be uniqueSo the first one…

Q: In the United States, telephone numbers consist of a three-digit area code followed by a seven-digit…

A: Given problem Given that   In the United States, telephone numbers consist of a three-digit area…

Q: 2) Phone numbers consist of a three-digit area code followed by seven digits. If the area code must…

A: Given information- We have given that a phone number consist of a three-digit area code followed by…

Q: To use an automated teller machine at a certain bank, you must enter a 6-digit code, using the…

A:

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.