A lock has a code of 3 numbers between 1 and 10. If no numbers in the code are allowed to repeat, how many different codes could be made?

Q: The password for a new online gaming site must contain three letters followed by four digits. The…

A: Given that there are 3 letters in the password and the letters can not repeat. There are 26 letters…

Q: serial number on an implanted medical device consists of 3 letters followed by 4 digits. The first…

A: Basic concepts of probability are used.

Q: It is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6, 7, 8. If each number is…

A: Given data: The total numbers are n=7. Case-1 The total 3 digits numbers that can be formed from the…

Q: In order to create a PIN to access your tablet, you have to choose six digits (where your choices…

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Q: Fifty (50) students in a school played Basketball and Football. Every student plays at least one of…

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Q: Find the number of way to arrange the letters in the word ESTRENGENT. if identical letters must be…

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Q: t is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6, 7, 8. If each number is used…

A: Given Information: It is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6, 7, 8.…

Q: It is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6. If each number is used only…

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Q: How many 7 digit phone number are possible? Assume the first digit can be zero and all digits can be…

A: make 7 digit phone number.The first number can be zero and all digits can repeated. The digits are :…

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

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Q: How many dozen doughnuts must be ordered for a meeting if 156 people are expected to attend, and…

A: To determine how many dozen doughnuts must be ordered for a meeting if156 people are expected to…

Q: There are 8 people at an office meeting. How many handshake

A: Formula: If there are n persons, The number of handshakes is, nn-12

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: If joe has 666666 snacks and aj has 2020 every time he comes over how many times will there be…

A: Let x denote the number of times aj can have cookies. So after x times, there will be no cookies…

Q: It is desired to write a 3-digit number using the numbers 2, 3, 4, 5, 6. If each number is used only…

A: Given: Numbers used = 2, 3, ,4, 5, 6 Numbers greater than 530 is required to be found. No digit is…

Q: Ten children are to be divided into an A team and a B team of 5 each. A team will play in one league…

A: Given Information:   The total number of children, n=10 The number of children divided into the two…

Q: How many 4-digit numbers are there?   And if repetition of digits is not allowed?

A: Given that n= number from 1 to 9 = 9 r = 4 ( since we have to take 4 digit number)

Q: Some automobiles have 4 button locks. To gain entry, push each of the four buttons, in a particular…

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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: lon.)

A: Given: Total number of players in a team are 16.            Number of positions are 9. To find:…

Q: A seven chats he insurance account number must be five letters of the alphabet followed by a…

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: Assume we have 23 coloured trousers and 12 coloured t-shirts. How many coloured suits (trousers +…

A: Here we have 23 colored trousers and 12 coloured t-shirts. And we have to find how many suits we can…

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: How many distinct four-digit numbers can be formed by the digits {1, 2, 3, 4, 5, 5, 5, 8, 6}? са…

A: There are total of 9 numbers, in which the 'number 5' is repeated thrice. So, there are 7 distinct…

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: ario painted identification letters on his bicycles so that he could track which ones are being used…

A: Since every cycle is coded with three letters of English alphabets, which starts with alphabet M.…

Q: Radio stations that are on the eastside of a nation have call letters consisting of a W followed by…

A: Here we have to number of five letter call letters starting from W

Q: How many six digit numbers can be formed with no repetitions?

A: We can use all the 6 digits without repetition A 6 digit number cannot have  0 in the first place.…

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: A survey of 100 people showed that 25 own a car, 58 own a bicycle, and 17 own both a car and a…

A: Solution-: We have Number of people showed that own a car =25               Number of people showed…