Suppose that a password for a computer system must have at least 6, but no more than 9 characters, where each character in the password is a lowercase English letter, or an uppercase English letter, or a digit, or one of the five special characters * , < , > ! and # (a) How many different passwords are available for this computer system? (b) How many of th

Q: How many distinct ten-digit passwords are possible if you must use at least one 26 lower case letter…

A: Given: you must use at least one 26 lower case letter from {a, b, . . . , z}, at least one 26 upper…

Q: If A is the set of all whole numbers less than 20 that are divisible by, 4, and B is the set of all…

A: A∪B is the union of set A and set B. This set contains all the elements in set A or set B. The Venn…

Q: For some particular website, the password must start with one of the letters A, B, or C. Then there…

A:

Q: We want to compute the number of possible strings that contain 3 letters (each letter can be a…

A: We want to compute the number of possible strings that contain 3 letters (each letter can be a…

Q: Suppose a company needs temporary passwords for the trial of a new payroll software. Each password…

A: The objective of this question is to find out the total number of possible passwords that can be…

Q: If 3 -letter words" are formed using the letters A, B, C, D, E, F, G, how many such %3D words are…

A:

Q: In how many ways can the letters of the word MANAGEMENT be rearranged so that the two 'A’s do not…

A:

Q: How many 10-bit strings are there if the string must start with 001 or 10?

A: By using the given information the solution is given as follows

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

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

A:

Q: How many 4-letter strings of upper- and/or lowercase letters are there that contain at least two…

A: To determine the number of 4-letter strings of upper and /or  lowercase letters are there that…

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: A ternary string is an ordered string of characters which consists of digits (0,1, or 2). For…

A:

Q: How many ways are there to construct a string of 4 digits if numbers cannot be repeated? Asume each…

A: The objective of this question is to find out the number of ways to construct a string of 4 digits…

Q: 2. Let S = {100, 101, 102,...,999} so that [S] = 900. (a) How many numbers in S have at least one…

A: We need to find number of digits.

Q: A code consists of selecting 4 not necessarily- distinct digits, followed by a 2-letter “word”…

A: There are total 10 numbers. A code of 4 digits can be made in 104 ways. Now the number of ways 2…

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: At a certain company, passwords must be from 4-6 symbols long and composed from the 26 uppercase…

A:

Q: A computer password is required to be 5 characters long. How many passwords are possible if the…

A: Given dataa computer password is required to be 5 cgaracters longThe password requires 2 letters…

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: A certain website wants you to build a 6-character password from the letters a through i, the…

A: Given: The letters will be selected from a through i. Thus, there are a total of 9 letters from a…

Q: There are 29 students in precalculus; in how many ways can students fill the Top five?

A: Permutation: A permutation is an arrangement of objects in a definite order.   Let n is the total…