#include <bits/stdc++.h>
using namespace std;
template <typename Arg1>
void __f(const char* name, Arg1&& arg1) {
  std::cerr << name << " : " << arg1 << '\n';
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args) {
  const char* comma = strchr(names + 1, ',');
  std::cerr.write(names, comma - names) << " : " << arg1 << " | ";
  __f(comma + 1, args...);
}
long long int gcd(long long int a, long long int b) {
  if (b == 0) return a;
  return gcd(b, a % b);
}
void solve() {
  map<long long int, long long int> m;
  long long int a, b, q;
  cin >> a >> b >> q;
  for (long long int i = 0; i < (a * b) / gcd(a, b) + 1; i++) {
    if (i == 0) continue;
    if ((i % a) % b == (i % b) % a)
      m[i] = m[i - 1];
    else
      m[i] = m[i - 1] + 1;
  }
  long long int lcm = (a * b) / gcd(a, b);
  for (long long int i = 0; i < q; i++) {
    long long int l, r;
    cin >> l >> r;
    long long int k = (r / lcm) * m[lcm] + m[r % lcm];
    if (l != 1) {
      l--;
      k -= (l / lcm) * m[lcm] + m[l % lcm];
    }
    cout << k << " ";
  }
  cout << '\n';
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  long long int t1;
  t1 = 1;
  cin >> t1;
  while (t1--) {
    solve();
  }
  return 0;
}
