As of April 2006, roughly 50 million .com web domain names were registered (e.g., yahoo.com).(a) How many domain names consisting of just two letters in sequence can be formed?domain namesHow many domain names of length two are there if digits as well as letters are permitted as characters? [Note: Acharacter length of three or more is now mandated.]domain names(b) How many domain names are there consisting of three letters in sequence? [Note: All are currently taken.]domain namesHow many of this length are there if either letters or digits are permitted?domain names(c) How many domain names are there consisting of four letters in sequence?domain namesHow many of this length are there if either letters or digits are permitted?domain names(d) As of a certain date, 96,485 of the four-character sequences using either letters or digits had not yet been claimed. Ifa four-character name is randomly selected on that date, what is the probability that it is already owned? (Round youranswer to four decimal places.)

Answered: Image /qna-images/answer/0f7878cf-b90a-48e1-955f-a04e8de5d2b8.jpg

Answered: As of April 2006, roughly 50 million…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Similar questions

How many different seven-digit phone numbers can be formed?
How many license plates (using the English alphabet )can be made using 2 or 3 letters followed by 2 or 3 digits?
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?
How many different 3-digit numbers can be formed with the digits 1, 2, 4, 6, and 8? How many of them are smaller than 300?
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?
Given 0, 2, 3, 4, 4, 5, 8, how many even numbers greater than 5 million can be created?
Two methods of measuring surface smoothness are used to evaluate a paper product. The measurements are recorded as deviations from the nominal surface smoothness in coded units. The joint probability distribution of the two measurements is a uniform distribution over the region 0 < x < 4,0 < y, and x – 1 < y < x+ 1. That is, fay (x, y) = c for x and y in the region. Determine the value for c such that fay (x, y) is a joint probability density function. Round your answers to three decimal places (e.g. 98.765). Determine the following: c = i 0.133 (a) P(X < 0.6, Y < 0.7) = i (b) P(X < 0.6) = i (c) E(X) = i (d) E(Y) = (e) For 0 < x < 1 marginal probability distribution of X is O 2 -for 0
If a number is not divisible by 8, can it be divisible by 16 ?
There are 1,094,765 active lawyers living in the country. If 71.3% of these lawyers are male, find (a) the percent of the lawyers who are female and (b) the number of lawyers who are female. (a) The 28.7 % of the lawyers are female. (Type an integer or a decimal.) (b) There are approximately 1094736 female lawyers. (Round to the nearest whole number as needed.) Enter your answer in the answer box and then click Check Answer.
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How many ways can a four-letter word be arranged from the word "PHILIPPINES"?
As of April 2006, roughly 50 million .com web domain names were registered (e.g., yahoo.com). (a) How many domain names consisting of just two letters in sequence can be formed? domain names How many domain names of length two are there if digits as well as letters are permitted as characters? [Note: A character length of three or more is now mandated.] domain names (b) How many domain names are there consisting of three letters in sequence? [Note: All are currently taken.] domain names How many of this length are there if either letters or digits are permitted? domain names (c) How many domain names are there consisting of four letters in sequence? domain names How many of this length are there if either letters or digits are permitted? domain names (d) As of a certain date, 94,595 of the four-character sequences using either letters or digits had not yet been claimed. If a four-character name is randomly selected on that date, what is the probability that it is…

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