Suppose a password for a computer system must have at least 7 but no more than 11 characters where each charcter in the password is a lower case English letter, an uppercase English letter, a binary digit, or a special character (*, >, <, !, +, =, $). How many passwords contain at least one of the seven special characters?

Q: Assume that product codes are formed from the letters V, S, and Q, and consist of 4 not necessarily…

A: 1). For 4 letter product code to be arranged with the letters V, S and Q, the first position is…

Q: 2) Each type of machine part made in a factory is stamped with a code of the form…

A: We can use :- 26 letters, 10 digits, 10 digits (as digits can be repeated)   Total number of…

Q: A nine character password has been randomly assigned by using capital and lower case letters. In how…

A: Given : A nine character password has been randomly assigned by using capital and lower case letters

Q: Assume that product codes are formed from the letters V, T, X, R, S, and Y, and consist of 6 not…

A: Available letters  : V, T , X , R , S, Y Repetition is allowed

Q: How many strings of 1our decimal digits have all four digits that are different? How many strings of…

A:

Q: Let us say that we are going to create eight letter passwords from a set of 23 letters (all of the…

A: There are 23 alphabets, 10 numerics and 5 symbols.

Q: How many bit strings of length 10 contain at least three 1s and three

A:

Q: How many bit strings contain exactly eight Os and 10 Is if every 0 must be immediately followed by a…

A: Solution

Q: Assume that product codes are formed from the letters A, B, C, D, and E, and consist of 5 not…

A: Product code is formed by the letters A, B, C, D, and E and consists of 5 not necessarily distinct…

Q: How many strings are there over the set {a, b, c} that have length 10 in which no two consecutive…

A:

Q: 1) How many different strings of 5 lower case letters are there? Assume that letters may repeat. 2)…

A: Here, to calculate number of different strings of 5 lower case letters can be created if that…

Q: How many bit strings contain exactly eight 0s and 10 1s if every 0 must be immediately followed by a…

A: Here we will use the concept of combination and the formula for combination is given by C(n,r) =…

Q: Let's suppose that a password must contain 4 characters, where a character can be any of the digits…

A: Total number of digits = 5 Total number of letters = 26 Total options are 5 numbers + 26 letters =…

Q: Suppose each license plate in a certain state has two digits, followed by two letters, followed by…

A: Given that the license plate has two digits followed by two letters again followed by two digits. Q…

Q: In how many distinct ways can the digits in the number 1,238,229,168 be arranged?

A: We have to find in how many ways the number  1,238,229,168 can be arranged.

Q: How many strings of 12 ternary digits (0, 1, or 2) are there that contain exactly four 0s, four 1s,…

A: The 12 ternary digits can be arrange in 10! ways, in which exactly four 0s, four 1s, and four 2s can…

Q: 10. A bank password consists of four letters of the Roman characters (small and capital letters)…

A: SOLUTION:

Q: How many 10-bit strings are there if the string must have exactly one 1 in the first half and…

A: The string must contain exactly one 1 in the first half and exactly one 1 in the second half. So…

Q: How many binary strings of length 5 have at least 2 adjacent bits that are the same (“00” or “11”)…

A: Given: Number of ways to fill each place = 2 (0 or 1) Total number of possible binary strings= 25…

Q: How many strings of seven lower case letters of the English alphabet contain exactly four letters w…

A: We have to use permutations and combinations here.

Q: Each character in a password of length six can be any uppercase letter from A-Z or any symbol from…

A:

Q: 1. How many words of length 5 are there on the set {A, B,C, D} which do NOT contain the string…

A: As per our honor code, we are authorized to answer only one question at a moment. As you have not…

Q: Suppose each license plate in a certain state has two digits, followed by two letters, followed by…

A:

Q: A license plate consists of   five symbols on each​ plate, where the first two symbols are letters…

A: Fundamental principle of counting : If an event occur in m ways an corresponding to it another event…

Q: Each character in a password of length six can be any uppercase letter from A-Z or any symbol from…

A: Given information: Total number of letters that can be used for password = 26 Total number of…

Q: Suppose each license plate in a certain state has four letters followed by two digits. The letters…

A: When the repetition is allowed in formation the general formula for calculating the possibility is…

Q: gits 0-9, the last four must be letters, and repeated characters are allowe

A: Given: Number of letters = 26 Number of digits 0-9 = 10

Q: Suppose a password must have at least 8 characters, but no more than 12 characters, made up of…

A: Given that, Suppose a password must have at least 8 characters, but no more than 12 characters, made…

Q: Suppose each license plate in a certain state has two digits, followed by two letters, followed by…

A: To understood this, consider a problem in which there are r vacant inline spots, each of the spots…

Q: How many Binary strings of length 7 do not start with zero?

A: Total number of binary strings of length n is 2n Total number of binary strings of length 7 is 27…

Q: write a program to evaluate even numbers for [1,10],and [11,20]respectively in matlab

A: Even numbers for [1,10] is given below-

Q: How many strings of 7 decimal digits are there, such that at least one of the digit is odd?

A: There are total 10 decimal digits, among which 5 are odd. Since repetition of digits is allowed,…

Q: Suppose a password for a computer system must have at least 7, but no more than 11 characters where…

A: A password for a computer system must have at least 7, but no more than 11 characters where each…

Q: Find the number of different ways to rearrange letters in the word PERMUTATION such that all the…

A: Here PERMUTATION word contains total 11 letter Of which A,E,I,O,U are vowels(5 vowels in given word)…

Q: Suppose each license plate in a certaln state has two digits, followed by two letters, followed by…

A: The license plate consists of two digits, followed by two letters, followed again by two digits.…

Q: Prove that in any set of 700 English words, there must be at least two that begin with the same pair…

A: Prove that in any set of 700 English words, there must be at least two that begin with the same pair…

Q: Let A denote the set of all 4 digit numbers that are divisible by 3, and B denote the set of all 4…

A:

Q: How many different words can be formed with the letters of the word ‘SUPER’ such that the vowels…

A:

Q: Suppose that a password for a locked door must have at least 8 characters, where each character in…

A: It is given that password can be a lowercase English letter, an uppercase English letter or a digit.…

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

A:

Q: Assume that product codes are formed from the letters V, T, X, R, S, and Y, and consist of 6 not…

A:

Q: 5 can be formed if the alphabet (set of avail

A: To find: Number of strings of length 5 that can be formed with {a,b,c} with last character not as b.

Q: Suppose each license plate in a certain state has four letters followed by two digits. The letters…

A: There are 6 positions in the license plate that need to be filled. Out of these 6, first 4 positions…

Q: Don't copy from google or other sites  How many bit strings of length 11 contain either five…

A: Given, the strings of length 11 contain either five consecutive 0s or five consecutive 1s.

Q: How many strings are there of length 6 over the alphabet {a, b, c, A, B} in which exactly two of the…

A: we have the alphabet a,b,c,A,B Now, we are interested in string of length 6. Since two of the…

Q: How many bit strings of length 10 contain either five con- secutive Os or five consecutive 1s? How…

A:

Q: A computer access password consists of from three to ten letters chosen from the 28 in the Arabic…

A: The part b of the can we solved by using the permutation.

Q: A bank password consists of SIX (6) letters of the Roman characters (small and capital letters)…

A: We need to determine the number of different passwords possible using the letters of Roman…

Q: Suppose each license plate in a certain state has one digit, followed by four letters, followed by…

A: Given, Each license plate in a certain state has one digit followed by four letters followed by one…

Q: A pizza chain wants to send codes for $2 off a large pizza to the subscribers of its e-mail list.…

A: Given that there are 3 positions for letters. Each position can have 23 choices. So the total…