import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
package template;

//standard libraries potentially used:
//Apache commons http://http://commons.apache.org/
//Google Guava http://code.google.com/p/guava-libraries/

import java.util.ArrayList;


public class Template {

    public static void main(String[] args) {

        //test();
        //Utils.die("Done testing");

        String folder = "C:\\Users\\Paul Thomson\\Documents\\CodeJam\\RecycledNumbers\\";
        Utils.logfile = folder + "log.txt";
        String infile = folder + "data.in";
        String outfile = infile.substring(0, infile.lastIndexOf(".")) + ".out";
        ArrayList<TestCase> tcList = TestCaseIO.loadFromFile(infile);
        //ArrayList<TestCase> tcList = TestCaseIO.mockUp();

        int numThreads = 1;
        if (numThreads == 1) {
            TestCaseSolver tcSolver = new TestCaseSolver(tcList, 1);
            tcSolver.run();
        } else {
            //split into separate lists
            ArrayList<ArrayList<TestCase>> tcSubLists = new ArrayList<>();
            for (int i = 0; i < numThreads; i++) {
                tcSubLists.add(new ArrayList<TestCase>());
            }

            int i = 0;
            for (TestCase tc : tcList) {
                tcSubLists.get(i).add(tc);
                i++;
                if (i == numThreads) {
                    i = 0;
                }
            }

            //run each sublist in its own thread
            ArrayList<Thread> threadList = new ArrayList<>();
            int ref = 1;
            for (ArrayList<TestCase> tcl : tcSubLists) {
                TestCaseSolver tcs = new TestCaseSolver(tcl, ref);
                Thread h = new Thread(tcs);
                threadList.add(h);
                h.start();
                ref++;
            }

            //wait for completion
            for (Thread h : threadList) {
                try {
                    h.join();
                } catch (InterruptedException ex) {
                    Utils.die("InterruptedException waiting for threads");
                }
            }

        }

        TestCaseIO.writeSolutions(tcList, outfile);
        
        double totalTime = 0;
        for (TestCase tc : tcList) {
            totalTime += tc.getTime();
        }
        double avTime = totalTime / (double)tcList.size();
        Utils.sout("Total compute time " + String.format("%.2f", totalTime) + " secs.");
        Utils.sout("Average compute time " + String.format("%.2f", avTime) + " secs.");
        Utils.sout("Done.");
    }

    public static void test() {

    }
}
