Before 1995, area codes for phone numbers had the following format: NNN, where first digit couldn’t be a 0 or 1, the middle digit had to be a 0 or 1, and codes of the form N11 were reserved for special services and not used as area codes. How many different area codes were there?

Before 1995, area codes for phone numbers had the following format: NNN, where first digit couldn’t be a 0 or 1, the middle digit had to be a 0 or 1, and codes of the form N11 were reserved for special services and not used as area codes. How many different area codes were there?

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Related questions

Q: Which number line highlights all whole numbers that round to 470 if we are rounding to the nearest…

A: Rounding numbers to the nearest ten is a straightforward process. Here are the steps:Identify the…

Q: Compare the numbers two hundred thirty-three thousand eight hundred and two hundred thirty-three…

A: The objective of this question is to compare two numbers and determine which one is larger.

Q: In the number 431, 208, 976, which number is represented by each of the following place value? a.…

A: Given: number is 431,208,976. To be find: Which number is represented by ten, thousand, ten thousand…

Q: How many different arrangements are there of the letters AAAABBCCC?

Q: How many ways are there to arrange the letters in the word COLORADO? Number

Q: How many (distinguishable) ways are there to rearrange the letters of ILLINOIS?

A: here total letters=8i-3l-2n-1o-1s-1

Q: How many ways are there to arrange the letters in the name KOSKINEN if the arrangement must start…

Q: Find the five number summary for Class B. 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86…

A: Given that ; A box plot is given for two classes. From the given figure find out the five number…

Q: Every Wayne State student has an access id; the 6-character name consisting of 2 letters (a-z)…

A: Students id consists of 6 characters out of which the first two characters are from (a -z) and which…

Q: There are 52 cards in an ordinary deck of playing cards. How many possible ways of shuffling are…

A: Since, we know that there are 52 cards in an ordinary deck of playing cards.Our aim is to find the…

Q: How many distinct arrangements of the letters in the ( fictitious) word FOOTBALLLERS are possible?

A: Given information- We have given the word FOOTBALLLERS, we have to find the no. of arrangements of…

Q: What is 344,999,000 + 900,811,081

Q: Evaluate: 138 O 106897 O 51891840 O 1287 O 120

A: Consider 13C8

Q: For many years, a state used 4 letters followed by 1 digit on its automobile license plates.…

A: given data licence plate : 4 letters followed by 1 digit. no. of different licence plates possible =…

Q: 7. Put the following numbers in increasing order, use the number line if needed: - 1.3, 4, , -5, -…

A: (8) solution: Given number: -1.3,4,7/2,-5,-1,0.23

Q: License plates consist of 4 digits followed by 4 upper-case letters. Plates that start with 00 are…

A: This question belongs to permutation and combination's.for detailed solution refer the attached…

Q: The employees of a company are given a 4-digit identification number. How many different numbers are…

A: GivenThe employees of a company are given a 4-digit identification numberNo.of digits from 0-9=10

Q: For the following number set, identify the five-number summary and find the interquartile range.…

A: Given: 325, 389, 399, 451, 475

Q: What is the check digit for the Visa Card 4232 0067 3456 567d?

A: To find the check digit (the value of d). The final digit is the check digit or checksum. It is used…

Q: How many EVEN 5-digit numbers can be made from the digits 2, 4, 5, 6, 7, 8, and 9?

A: Counting technique is widely used in probability.

Q: 11. Find the five number summary for the following set of values: 8 28 39 46 53 81 88

A: Find five number summary 8 , 28 , 39 , 46 , 53 , 81 , 88 Here n=7 1st number = minimum 2nd number =…

Q: National Survey on Drug Use and Health, conducted in 2002 and 2003 by the Office of Applied Studies,…

A: Data of the National Survey on Drug Use and Health, conducted in 2002 and 2003 by the Office of…

Q: In a certain state, license plates each consist of 2 letters followed by 3 digits. How many…

Q: A nursery employee wishes to plant 7 aplle trees, 5 pear trees, and 10 apricot trees in one row.…

A: Given a nursery employee wishes to plant 7 apple trees, 5 pear trees, and 10 apricot trees in one…

Q: The number of digits in the CVC was changed from 3 digits to 4 digits. Determine the increase in…

A: Given: The CVC of credit card has 3 digit and these digits can be any number from 0 to 9, and also…

Q: Shannon was born on 02/22/1982. How many eight-digit codes could she make using the digits on her…

Q: 12. Find the five number summary for the following set of values: 26 32 43 51 64 86 91

A: Given: The set of values is given by 26 32 43 51 64 86 91. To Find: We have to determine…

Q: The numbers of cars imported into the United States from various countries during a certain time…

A: Observe the numbers in the list. South Korea is on the fifth number.

Q: Compute the following numbers:b. How many three-letter “words” are there without repeated letters?…

A: The total alphabets are 26.The first number can be filled with 26 possibilities since total…

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Step 1

VIEW

Step 2: Step 2

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

The CDC reported a total number of COVID deaths in the United States to be 571,762 on April 19, 2021. On that same date in 2020, the total number of COVID deaths in the US was 92.5% lower. Use this information to calculate the total number of COVID deaths in the US as of April 19, 2020. How many more deaths accumulated from April 19, 2020 to April 19, 2021?
How many different seven-digit phone numbers can be formed?
Suppose a boxplot has the following five-number summary: min=37, Q1 = 46, Q2=87, Q3 = 383, max-462 Calculate the inner fence. Round your answer to 2 decimal places. Remember: if your last digit is a 0, Canvas will truncate this automatically, and this will not affect your grade (e.g., if you enter 2.00, Canvas will change this to 2, and you will not lose marks).
What is the interquartile range of the following numbers: 62,65,72,76,80,84,92,96
An official state identity card has the format C321, where C represents a capital alphabet letter followed by three digit numbers. How many different identity cards are possible?
The number of unique arrangements of all the letters in the word CONDOMINIUM is: 39 916 800 19 958 400 2 494 800 990
Users of the online system for a Bank are required to set a password that is 10 character-long. Each character can be a letter, a 1-digit number, or a symbol from the list: !, @, #, &, % How many passwords are possible if there is no distinction between upper case and lower case letters? (Not Case-sensitive) How many passwords are possible if the first and last digits have to be numbers?
2. Evaluate and simplify the following: 12018 + 11983
A standard-issue 2020 New Jersey license plate had one letter, then two digits, followed by three letters. New Jersey DOO SPA Garden State These plates were not allowed to have letters D, T, or X in the fourth position, or the letters I, O, or Q in any position. With these restrictions, how many different license plates were possible in 2020?
What must be the next letters in the list: O, T, T, F, F, S, ___, ___, ____?
Please explain why and how you used the ASA method