Answer:
1.  the set of real numbers between 0.1 and 0.2
2. the set of all negative integers greater than negative 1 trillion
3.  the set of all java and C programs
Explanation:
A set is countable if it is either finite or has the same cardinality as the set of positive integers. The inverse of this set type is uncountable.
The set of real numbers between 0.1 and 0.2, all negative integers greater than negative 1 billion, and a set of java and C programs are all countable sets, so are considered countably infinite.
 
        
             
        
        
        
Answer:
False
Explanation:
Namecoin is a type of crypto currency which was originally pronged from Bitcoin software. It is coded in the fashion of Bitcoin with the same algorithm as well. Hence it is not a blockchain technology that is used to implement decentralized version of Routing Banking System. Namecoin can store data within its own blockchain transaction database.
 
        
             
        
        
        
The area of a square is simply the square of the side. So, you only need to write a program that receives a number as input, which is the side of the square, and returns that number squared, which will be the area of the square.
You didn't specify any language, so for example here's a C implementation that receives the side from the user and returns the area:
#include <stdio.h>
int main()
{
    double side, area;
    
    do{
        printf("Enter the side of the square (must be >0): ");
        scanf("%lf", &side);
    } while(side<=0);
    area = side * side;
    printf("The area is %lf", area);
}
 
        
             
        
        
        
Datasheet 
<span>The datasheet view in access looks similar to an excel spreadsheet.</span>
        
             
        
        
        
The answer is <span>ESRI.  It </span>offers a complete graphic information system software solution for computer-generated maps that stores all its data in your oracle 10g database.  It stands for Environmental Systems Research Institute.  Esri's<span> GIS mapping software is the most powerful mapping and spatial data analytics technology available.</span>