#include<bits/stdc++.h>
using namespace std;
#define int long long
#define PII pair<int,int>
#define lson 2*p
#define rson 2*p+1
#define x first
#define y second
//#define endl "\n"
constexpr int N=1e6+10;
constexpr int mod=998244353;
int b[N],a[N];
struct node {
    int a,b;
} f[N];
bool cmp(node a,node b) {
    return a.a+a.b>b.a+b.b;
}
void solve() {
    int n;
    cin>>n;
    if(n==2) {
        double ret=1;
        printf("%.9lf %.9lf\n",ret,ret);
        return ;
    }
    double ans=n-1+(n-1)*(n-2);
    double res=n*(n-1)/2;
    printf("%.9lf 2.000000000\n",ans/res);
}
signed main() {
    // ios::sync_with_stdio(false);
    // cin.tie(0);
    int T=1;
    cin>>T;
    while(T--) {
        solve();
    }
}