#include<bits/stdc++.h>

using namespace std;

//directives

#define pb push_back

#define int long long

#define ss second

#define ff first

void solve(){

int n; cin>>n;

vector<int> arr(n);

for(int i=0; i<n; i++) cin>>arr[i];

sort(arr.rbegin(), arr.rend());

for(int i=1; i<n-1; i++){

int a = arr[i-1], b = arr[i], c = arr[i+1];

if(3*b - 2*a == c) continue;

if(3*b - a == 2*c) continue;

cout<<"No"<<endl;

return;

}

cout<<"Yes"<<endl;

}

int32_t main(){

ios_base::sync_with_stdio(false);

cin.tie(0);

int t=1;

cin>>t;

while(t--) solve();

return 0;

}