a) codes that can be formed b) codes where the number 1 appears at least once c) codes composed of distinct numbers d) codes where at least two numbers are identical

Q: a) Suppose in a university, each subject offered to students has a subject code consisting of four…

A: a) In a university each subject offered to students has a subject code consisting of four letters…

Q: A student number system for a county requires that the student number be 6 characters, 4 numbers…

A: We have to find no. Of password possible.

Q: Q1) a) How many 3 digits passcodes are there if first digit must be a 1 or 2 ?   b) How many 3…

A: a). There are 10 digits (0,1,2,3,...,9)  in total. If the first digit is filled with 1 or 2, then…

Q: how many different 5-digit codes can be formed if the first digit must be an odd number, the second…

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Q: help

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Q: Number 25

A: IN this question, we use integration by parts .

Q: How many 5 letter codes are possible from the first 7 letters of the alphabet? a.) letters can be…

A: Excel is used to obtain the line and bar graph for years of education and years of experience,…

Q: d) Science club only e) Mathematics and science club but not English club

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

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Q: A number is called “quadary” if each digit is either 0, 1, 2, or 3. How many different 5-digit…

A: Given that a number quadary if each digit is either 0,1,2 or 3. To find the number of  different…

Q: A 3-digit code is to be made from the set of digits {4, 5, 6, 7, 8}. a. How many codes can be formed…

A: Given:

Q: a, bez show that 19-612 lal-lb/

A: Note: We have the triangle inequality of real numbers as  |x+y| <= |x| + |y| for any two real…

Q: How many numbers can be created? b) How many of them are odd numbers? c) How many of them are…

A: Here given total 7 digits  From which 3 digit number is formatted

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: There are total 7 digits, such that, 2, 3, 4, 5, 6, 7 and 8.

Q: how many passwords are there if you do not allow repeating digits? b.) How many passwords are there…

A: Since , the passwords are made by using 4 digits from 1-9. Total numbers=9 Password length=4 Our aim…

Q: You are a member of the BCC Math Club. The club has 15 members. a) How many different ways are there…

A: a)given,           club has 15 members here n=15(total numbers)           we need to select the…

Q: Determine the number of six-character passwords that can be formed using two letters from A to F and…

A: From A to F there are 6 letters. We can pick 2 letters from 6 letters in 6C2=15 waysIn 1 to 9 there…

Q: How many unique codes are possibly formed from two characters, where the first character can be 2 to…

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Q: four or five-digit PIN is to be selected from the ten digits 0,1,2,3,4,5,6,7,8,9. How many 4-digit…

A: Permutation and combination used to calculate the number of possible ways to arrange or select a…

Q: How many four letter words beginning and ending with a vowel without any letter repeated can be…

A: As per our guidelines we are supose to do only one questionGivenword is "MATHEMATICS"No.of letters…

Q: Assume a country has 3-digit area codes that all have 0 or 1 as the middle digit, do not have 0 or 1…

A: Solution: From the given information, 3-digit area code should be formed. The first digit do not…

Q: How many different four letter secret codes can be formed if the first letter must be an S or a T ?

A: The experiment is to form four-letter secret codes. The condition is the first letter must be an S…

Q: Q)1 a) How many 3 digits passcodes are there if first digit must be a 1 or 2 ?   b) How many 3…

A: Q1) a) There are 10 digits 0,1,2,3,4,5,6,7,8,9. The 3 digit passcodes must be formed such that first…

Q: From the letters {A, B, C, D, E, F. G}, how :many 3-distinct-letters codes can be (a) generated? (b)…

A: a) 7C3 distinct codes can be generated by {A,B,C,D,E,F,G} which is equal to 21

Q: How many unique codes are possibly formed from two characters, where the first character can be 3 to…

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Q: a) how many 16 letter-words are there where it only contains A exactly 7 times c) how many 16…

A: Combinations are used to perform mathematical calculations when the ordering of selection is not…

Q: A product code consists of a one or two-digit number (including 0) followed by 3 not necessarily…

A: A product code consists of a one or two-digit number (including 0) followed by 3 not necessarily…

Q: 6. There is a safe that requires a special access code in order to open. This code is 6 characters…

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Q: List all two-digit numbers that can be written using only the digits 3, 7, and 9. List the numbers…

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