How many 8 letter passwords are there if they have to contain exactly one upper case letter and at least one digit (and all the rest are lower case letters)? What if instead they have to contain at least one upper case letter and one digit?

Q: A pizza shop has 18 different toppings available for their pizzas. How many different possible…

A: Given: A pizza shop has 18 different toppings available for their pizzas. Each pizza contains 4…

Q: In the past, a college required students to use a 4 digit PIN (Personal Identification Number) as…

A:

Q: A telephone number consists of 10 digits: 3 digit area code followed by 7 digit number. How many…

A: For area code , possible first digits are 1 to 9 and for the other number ,remaining digits are 0-9…

Q: How many four-digit numbers can be formed from the digits 0, 1, 2, 3, 4, and 5 if each digit can be…

A: given digits;  0, 1, 2, 3, 4, and 5 total number of digits = 6 number of four-digits numbers can be…

Q: The access code to a house's security system consists of seven digits. How many different codes are…

A: Given that the access code to a house's security system consists of seven digits.

Q: A combination lock that consists of the digits 0 through 9 requires a sequence of five numbers to…

A: Given Information :  A combination lock that consists of the digits 0 through 9 requires a sequence…

Q: Outside a home, there is a 4-key keypad with letters A, B, C, and D that can be used to open the…

A: Given Outside a home , there is a Keypads with letter= A,B,C,D Number of codes=4

Q: How many different 11-letter words (real imaginary) can be formed from the letters in the word…

A: We have to find the total number of 11-letter words that can be formed from the letter in the word…

Q: How many options do you have for a 10-digit password of 26 letters?

A: to find number of option for a 10-digit password of 26 letters

Q: You are selecting a 7 character password using 4 letters and 3 numbers ( from 0-9 ), without…

A: The following solution is given below :

Q: There are two copies each of 4 different books. In how many ways can they be arranged on a shelf?

A: GivenTwo copies each of 4 different booksTotal no.of books=2×4=8

Q: From the deck of 52 playing cards, how many ways can 2 cards be drawn such that one is face card and…

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Q: Outside a home, there is a 5-key keypad with letters A, B, C, D and, E that can be used to open the…

A: 5 key keypad with letter A,B,C,D,E.the key can be used to open the garage if the correct five-letter…

Q: If it will be allowed to use a number repeatedly, how many 4-digit numbers can we form from the…

A: In this question we have to find how many four digit can be formed from the given numbers.

Q: A car company is going to issue new ID codes to its employees. Each code will have one digit…

A: The objective of this question is to find out the total number of unique employee ID codes that can…

Q: How many 3 digit numbers may be formed from the digits 0,1,2,3,4, & 5 if no digit maybe repeated?

A: The given number are 0,1,2,3,4,5.

Q: If I am creating a 5-digit number combination, how many combinations will be created if the first…

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Q: password contains 2 letters and 2 digits.  How many passwords are possible if repetitions are NOT…

A: The number of letters is 2 and the number of words is 2.

Q: The gate code at your apartment complex is three numerical digits followed by the “#” sign. If each…

A:

Q: how many five letter codes can be made if each chosen letter (from the the original 7 letters) can…

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Q: How many different​ 4-letter acronyms can be made if the first letter must be K, U, or Y and no…

A: How many different 4-letter acronyms can be made if the first letter must be K, U, or Yand no letter…

Q: A 7 digit phone number consists of numbers 0 - 9. How many different combinations can be made if the…

A: Given ,number digits from 0 to 9=10

Q: email password consists of two letters followed by three digits. Find the number of passwords…

A: Concept: Given that An email address consists of Two letters followed by three digits.  Since we…

Q: bank PIN is a string of four digits, each digit 0-9. How many choices are there for a PIN if the…

A: Given A bank PIN is a string of four digits, each digit 0-9. Odd numbers=1,3,5,7,9

Q: As I went to pay for my coffee, I saw a sign saying, “Win free coffee for a year! Choose 4 different…

A: The objective of this question is to find out the total number of different 4-digit passcodes that…

Q: f any arrangement of letters is considered a word, and there are 21 consonants and 5 vowels to…

A:

Q: A corporate password consists of four digits, followed by three lower-case letters of the alphabet.…

A: The password is 4 digits long followed by three lower-case letters.

Q: A certain website requires a password to be 6 characters in length. Two of the characters must be a…

A: From the provided information, A certain website requires a password to be 6 characters in length.…

Q: The Hawaiian alphabet consists of 7 consonants and 5 vowels. How many three-letter “words” are…

A: From given data : there is 7 consonants and 5 vowels