// https://c...content-available-to-author-only...u.vn/student/question/DSA04004
// GẤP ĐÔI DÃY SỐ
 
#include <bits/stdc++.h>
using namespace std;
 
vector<long long> f(55);
void prepare() {
    f[1] = 1;
    for (int i = 2; i < f.size(); ++i) {
        f[i] = f[i - 1] * 2;
    }
}
 
void testCase() {
    long long n, k;
    cin >> n >> k;
    for (int i = n; i >= 1; --i) {
        if (k > f[i]) k -= f[i];
        else if (k == f[i]) {
            cout << i;
            return;
        }
    }
}
 
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
 
    prepare();
    int T = 1; cin >> T;
    while (T--) {
        testCase();
        cout << "\n";
    }
    return 0;
}

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Mwo1MCAxMCAKNTAgMTEKNTAgMTI=

3
50 10 
50 11
50 12