q8... plz send a solution 8. How many 9-bit strings (that is, bit strings of length 9) are there which:(a) Start with the sub-string 101? Explain.(b) Have weight 5 (i.e, contain exactly five l's) and start with the sub-string 101? Explain.(c) Either start with 101 or end with 11 (or both)? Explain.(d) Have weight 5 and either start with 101 or end with 11 (or both)? Explain.

Answered: Image /qna-images/answer/6b4fe83e-1c39-4a3c-9bc0-360093478d60.jpg

Answered: -bit strings (that is, bit strings of…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I know it is a pain but I am looking for a kind stranger to add comments within the below C++ code, that explains what each line of code is doing. Please and Thank you C++ Source code: #include <iostream> #include <fstream> using namespace std; int main() { string input; ofstream outFile; outFile.open("CSC450_CT5_mod5.txt", ios::app); if (outFile.is_open()) { cout << "Enter a string to be stored in the file: "; getline(cin, input); outFile << input << endl; outFile.close(); } else { cout << "Error opening file" << endl; } ifstream inFile; ofstream outFile2; inFile.open("CSC450_CT5_mod5.txt"); outFile2.open("CSC450_mod5-2.txt"); if (inFile.is_open() && outFile2.is_open()) { string line; while (getline(inFile, line)) { outFile2 << line << endl; } inFile.close(); outFile2.close(); } else { cout << "Error opening file" << endl; } string reverse; ifstream inFile2; ofstream outFile3;…
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30. You have made it to the final round of the show Let’sMake a Deal. You know that there is a $1 million prizebehind either door 1, door 2, or door 3. It is equallylikely that the prize is behind any of the three doors.The two doors without a prize have nothing behindthem. You randomly choose door 2. Before you see whether the prize is behind door 2, host Monty Hallopens a door that has no prize behind it. Specifically,suppose that before door 2 is opened, Monty revealsthat there is no prize behind door 3. You now have theopportunity to switch and choose door 1. Should youswitch? Simulate this situation 1000 times. For eachreplication use an @RISK function to generate thedoor that leads to the prize. Then use another @RISKfunction to generate the door that Monty will open.Assume that Monty plays as follows: Monty knowswhere the prize is and will open an empty door, but hecannot open door 2. If the prize is really behind door2, Monty is equally likely to open door 1 or door 3.If the…
Which of the following is equivalent to P (Q P)? Select all that apply. Q P-Q Q- P PV-P QV-Q
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A certain university is considering the purchase of N95 masks to distribute to their students for protection against the next variant of the covid virus. They found a reliable distributor who offers N95 masks with a quantity discount. The pricing is shown below. Number of N95 masks Price per mask From To 500 $1.23 501 2000 $0.98 2001 5000 $0.62 5001 or more $0.53 For example, if the university purchases 700 masks the price is 500 × $1.23 = $615.00 for the first 500 masks plus (700 – 500) × $0.98 = $196.00 for the next 200 masks for a total of $615.00 + $196.00 = $811.00. Write a MATLAB program that first prompts the user to input the number of masks. Use the following prompt: Please enter the number of N95 masks: Then, based on the number entered and the above table, calculate the purchase price. Output to the command window the number of masks and the purchase price as follows: Your price for xXXx N95 masks is $xxx.xx where xxxx is the number of masks and $xxx.xx is the price. If the…
In addition to checking a person's age, now you will check whether the traveler has a valid status ('True/False) to get DL in the state. You will get the DL if you are 18 or equal and have a valid status; otherwise, give a message that says, 'Sorry, you do not qualify for a DL. 1 I Q 2.1 What happens when you enter the status input as an uppercase letter 'True,' and how do you tackle it?"
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