How many digit strings of length 5 do not contain 00? A) 9(9,720)+981 B) 9(9,720+981) C) 9,720+981 D) None of these are correct

Q: How many integers between 100 and 400 contain the digot 2?

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Q: 2 Rewrite cach pair of expressions to have the same base a) Sand 64 b) and 9 and 125 4) 2 and 8 27nd…

A: you can clearly understand if you follow the below solution

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: How many 6-character license plate numbers are possible if there are no repeats and either numbers…

A: no.of letters (from A to Z)=26no.of digits (from 0 to 9)=10Total no.of characters=36

Q: Is a set {-22,-3,0,1,5,9,10} modulo 7 a RRS? Why? Is a set {-5,-22,-15,-9,-2,5,8,10,25,34,48} modulo…

A: A subset S of the integers is called a reduced residue system modulo n if: gcd(r, n) = 1 for each r…

Q: A four-bit code word is any sequence of four digits, where each digit is either a 0 or a 1. For…

A: Here we have to form A Four bit code word of four digits using the digit 0 and 1

Q: How many different passwords exist that consist of 12 characte using uppercase and lowercase…

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Q: a) How many 3-digit positive integers are there with odd digits?

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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: Suppose that a password is exactly six characters and each character is 1 of the 26 lowercase…

A: The number of lowercase letters is 26 and the number of integers is 10.

Q: 2) How many integers between 1 and 200, including both 1 and 200 are divisible by 4 or 5? 3) How…

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Q: How many positive integers less than 1000 are divisible by 5? How many positive integers less than…

A: We will answer the first three questions as per our guideline. Please resubmit the other question…

Q: How many odd integers from 1,000 through 9,999 have distinct digits?

A: From 1000 to 9999 , all are 4 digited integers.  If the integer is odd then the last digit can occur…

Q: How many strings of length 5 can be formed if the alphabet (set of available characters)is {a,b,c}…

A: The given alphabets are {a, b, c}. So, the number of characters is 3. The length of the string is 5.

Q: How many integers between 1000 and 9999 inclusive are not divisible by 5?

A: The number of integers from 1 and 9999 which are divisible by 5 is = [9999 ÷ 5] = [1,999.8] = 1999…

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

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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: 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: Assume that all four-digit integers (numbers from and including 1000 to and including 9999) are…

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Q: Recall that hexadecimal numbers are constructed using the 16 digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A,…

A: We know that,Hexadecimal numbers are constructed using the 16 digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,…

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: 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: How many real four digit numbers (they can not start with zero) can be formed from digits 0, 1, 2,…

A: Given digits is 0,1,2,3,4,5,6Total no.of digits = 7

Q: 1) 50 + 90 = + 50: 2) 7 x (25 + 5) = (7 x 25) + (7 x 3) (10 + 15) + 20 = 10 +( 4) (8 x x 9 = x (5 x…

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Q: How many different ways a 4- digit code can be made if no digit can be used more than once

A: Four digit code are We need to form 4-digit code using  0,1,2,3,4,5,6,7,8,9 digits. The number of…