#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
using namespace std;
typedef long long int ll;
typedef pair<int,int> P;
#define yn {puts("YES");}else{puts("NO");}
#define MAX_N 200005

int main() {
    int T; cin >> T;
    rep(_,T){
        int n; cin >> n;
        if(n == 1){
            cout << 10 << endl;
        }else{
            cout << 9;
            rep(i,n-1) cout << '0';
            cout << endl;
        }
    }
    return 0;
}