#include <iostream>
#include <fstream >
#include <vector >

using namespace std;
ifstream fin("zvon.in");
ofstream fout("zvon.out");
bool viz[100000];
vector <int>a[100000];

int niv=0;

int dfs (int nod)
{
viz[nod]=1;
niv++;
for (int i=1; i<=a[nod].size();++i)
    if(!viz[a[nod][i]])
    dfs(a[nod][i]);
}

int main()
{
    int n,x,y, t;
    fin>>t;
    for (int i =1; i<=t; ++i)
    {

        fin>>n;
        for(int j=1; j<n; ++j)
        {
            fin>>x>>y;
            a[x].push_back(y);
            a[y].push_back(x);
         }
        dfs(1);
        fout<<niv;
        }
    return 0;
}