TOPIC: Permutation / Combination In a 4-digit combination lock, how many possible codes are there if no digits in the lock are repeated?

Q: How many different possible area codes are there if an area code is 3 digits long and cannot contain…

A: From the provided information, An area code is 3 digits long and cannot contain a 0 or have 1 or 9…

Q: Standard automobile license plates in a country display 2 numbers, followed by 3 letters, followed…

A: we know thatno.of letters (A to Z)=26no.of digits(0 to 1)=10

Q: Classify the problem as a permutation, a combination, or neither. How many three-digit numbers can…

A: Given that  Numerals = { 2 , 3 , 4 , 5 }   Number of three digit numbers formed without repetition.…

Q: 7. You need to select a three-character password for a new online bank account. The rules are: you…

A: Permutation - The different arrangements of a given number of things by taking some or all at a…

Q: Entrance codes at Harvard require four numbers, which may be 0 thru 9 and may be repeated. How many…

A:

Q: A gate has a standard key pad with the digits 0 through 9. How many possible code combinations are…

A: Given : A gate has a standard key pad with the digits 0 through 9 To find : total number of possible…

Q: an iPhone locks with a 5-digit code. How many codes are possible, if repetition isnot allowed and…

A: Lock of 5 digit code , Repetition is not allowedFirst digit must be 9 Number of codes = ?

Q: A four-digit house number contains no zeros. The number has exactly three distinct digits. How many…

A: Permutation: A permutation is an arrangement of numbers in order. It is denoted as Prn . Formula is…

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

A: Given information:The number of possible 3-digit code has to be computed where repetition of digits…

Q: How many ways can you get we get a 2 digit passcode if zeros are not allowed?

A: If zero is not allowed, The number of available digits is 9 (1,2,3,4,5,6,7,8,9)

Q: Every Wayne State student has an access id; the 6-character name consisting of 2 letters (a-z)…

A: Students id consists of 6 characters out of which the first two characters are from (a -z) and which…

Q: A computer password must be eight characters long. How many passwords are possible if only the 26…

A: Given Total no.of alphabets=26No.of characters long =8

Q: To enter their home the rouse family enters a 6 character code consisting of 4 letters (uppercase of…

A: We have to find 6 character code consisting of 4 letters (uppercase of lowercase) and 2 digits if…

Q: How many different unique passwords could be made by rearranging the following characters? M A T H E…

A: How many different unique passwords could be made by rearranging the following characters? M A T H E…

Q: An identity thief is trying to break into someone's computer that is protected by a 4-digit passcode…

A:

Q: How many different 3 letter codes can I make that do not contain any repeated letters

A:

Q: Skyscraper Puzzle #4 4 4 Place buildings in all cells on the grid according to the following rules:…

A:

Q: How many different 2 letter passwords can be formed from the letters A, B, C, D, E, and F if no…

A:

Q: You are asked to create a six character password and each character can be any of the 26 letters of…

A: Given: Number of alphabets=26 Number of numerical 2 through 9=8 Total number of characters, n=34 The…

Q: Standard automobile license plates in a country display 1 numbers, followed by 3 letters, followed…

A: Solution: Here license plate contains first 3 letters followed by 3 numbers. Total number of choice…

Q: Decide whether you would use a permutation, a combination, or neither. Next, write the solution…

A: By combination method:- nCr = n!/r!(n-r)!

Q: Bob owns 13 different books. He wants to pick out and arrange 5 of these books left-to-right on a…

A:

Q: how many possible combinations are there for computer password that must contain six letters a…

A: Each of the places can take any letters from A to Z , as no repeat condition is given. Therefore,…

Q: A password must have 2 letters from the school acronym NDDU and 3 digits from 1 to 9. How many…

A: 2 letters from the school acronym NDDUand 3 digit from 1 to 9we have to find out the possible…

Q: How many posible 5-digit zip codes exist if the first number must be from 3 and 9, the last number…

A: We have given that 5-digit zip codes exist if the first number must be from 3 and 9, the last number…

Q: How many different possible area codes are there if an area code is 3 digits long and cannot contain…

A: Sol:- If an area code is 3 digits long and cannot contain a 0, 1, or 9, then each digit can be…

Q: There are 49 runners in a race. How many ways can the runners finish first, second, and third? There…

A:

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

A: Suppose that the repetition of digits is permitted, there are  choices  for each digit in the -digit…

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: TOPIC: Permutation How many four-digit numbers can be formed from the digits 1, 2, 6, 8, 9 if: A.…

A:

Q: what is the pattern for 44,22,20,10,8 ___ and what comes next

A: 44,22,20,10,8,_

Q: Outside a home, there is a 9-key keypad with letters A, B, C, D, E, F, G, H, and I that can be used…

A: Permutation: It defines the number of possible ways an object can be arranged or ordered. The…

Q: How many different ways a 4- digit code can be made if no digit can be used more than once

A: Four digit code are We need to form 4-digit code using  0,1,2,3,4,5,6,7,8,9 digits. The number of…

Q: How many modified perfect faro shuffles are needed to return the cards to their original position in…

A: The farro shuffle is a method of shuffling playing cards, in which half of the deck is held in each…

Q: How many three-digit code can be made where the order of digits is not important? The possible…

A: Three digits code is to be prepared by  0,1,2,3,4,5,6,7,8,9. That is with the help of the 10 digits…