Answer:
- using System;      
 - public class Program
 - {
 -  public static void Main()
 -  {
 -   Console.WriteLine("Enter number of students: ");
 -   int num = Convert.ToInt32(Console.ReadLine());
 -   string [] firstName = new string[num];
 -   string [] lastName = new string[num];
 -   
 -   for(int i=0 ; i < num; i++){
 -   	Console.WriteLine("Enter first name: ");
 -   	firstName[i] = Console.ReadLine();
 -     
 -   	Console.WriteLine("Enter last name: ");
 -   	lastName[i] = Console.ReadLine();
 -   }
 -   
 -   for(int j=0; j < num; j++){
 -   	Console.WriteLine(lastName[j] + "," + firstName[j]);
 -   }
 -  }
 - }
 
Explanation:
Firstly, prompt user to enter number of student to be stored (Line 6- 7). Next, create two array, firstName and lastName with num size (Line 8-9). 
Create a for-loop to repeat for num times and prompt user to enter first name and last name and then store them in the firstName and lastName array, respectively (Line 11 - 17).
Create another for loop to traverse through the lastName and firstName array and display the last name and first name by following the format given in the question (Line 19 - 21).
 
        
             
        
        
        
Answer:
the third statement is true
Explanation:
given data 
Lenovos cost more than Dells
Lenovos cost less than Apples
solution
we have given 1st statement that is express as
cost (Lenovo) > cost (Dell)     ..................1
and 
2nd statement that is express as
cost (Lenovo) < cost (Apple)
so we can say it as 
cost (Apple) > cost (Lenovo)       ......................2
and 
now above Both equation 1 and 2 can be written as 
cost (Apple) > cost (Lenovo) > cost (Dell)      .........................3
so we can say cost of Apples is more than the cost of Lenovos and the cost of Dells 
so as that given 3rd statement is true 
 
        
             
        
        
        
A is the answer for the sentence
        
             
        
        
        
Answer:
See the detailed answer in attached file.
Explanation :
 
        
             
        
        
        
Answer:
STEP1 Cut to Rough Length
STEP2 Cut to Rough Width
STEP 3 Face-Jointing
HOPE THAT HELPSSS!!!