#include <iostream>
#include <fstream> // file stream
using namespace std;

int oglindit(int z);
int estePalindrom(int n);
int main()
{
    int n, a,b;
    ifstream fin("nr_pal.in");
    ofstream fout("nr_pal.out");
    fin >> n;
    for (int i = 0; i < n; i++) {
        fin >> a >> b;
        int contor = 0;
        for (int j=a; j <=b; j++) {
            if (estePalindrom(j)) {
                contor++;
            }
        }
        fout << contor << endl;
    }

    fin.close();
    fout.close();

    return 0;
}


int estePalindrom(int x) {
    if (oglindit(x) == x) {
        return 1;
    } else {
        return 0;
    }
}

int oglindit(int n) {
    int rezultat = 0;
    while(n > 0) {
        int ultimaCifra = n % 10;
        rezultat = rezultat * 10 + ultimaCifra;
        n = n/10;
    }

    return rezultat;
}