If you are referencing cell (C2)in Excel and want to be able to copy the formula and keep using the data in cell C2 in every place you copy it to, the way to reference the cell? is known to be $C$2.
<h3>What is a cell reference in Excel?</h3>
 A cell reference is known to be called a cell address and this is seen as a make up of a column letter and also those of  row number that tells a cell on a worksheet.
Hence, If you are referencing cell (C2)in Excel and want to be able to copy the formula and keep using the data in cell C2 in every place you copy it to, the way to reference the cell? is known to be $C$2.
Learn more about cell referencing from
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Answer: Something people can change and share. It is usually given the bad name of have a bunch of fake information and bugs. Wikipedia is a good example of an open source website but it is not a program.
Explanation: An open source program is a program where you have free rein to basically do whatever you want to it. 
 
        
             
        
        
        
<h3>a= hybrid computer can perform the function of both analog and digital computer</h3>
        
             
        
        
        
/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
class NestedLoops {
public static void main (String [] args) {
int numRows = 4;
int numCols = 5;
int i,j;
char ch = 'A';
// Note: You'll need to declare more variables
/* Your solution goes here */
for ( i = 0; i < numRows; i++) { // Outer loop runs for numRows times
for ( j = 0; j < numCols; j++) { // Inner loop runs for numCols times
System.out.print(i+1);
System.out.print((char)(ch+j));
System.out.print(" ");
}
}
System.out.println("");
return;
}
}