#include <bits/stdc++.h>

using namespace std;

int main() {
	int T;
	scanf("%d", &T);
	while (T--) {
		int n;
		scanf("%d", &n);
		const int INF = (int) 1e9;
		int mn = INF, where = -1;
		for (int i = 0; i < n; i++) {
			int x;
			scanf("%d", &x);
			if (x < mn) {
				mn = x;
				where = i + 1;
			}
		}
		printf("%d\n", where);
	}
	return 0;
}