diff --git a/card_removal.cpp b/card_removal.cpp
new file mode 100644
index 0000000..193454f
--- /dev/null
+++ b/card_removal.cpp
@@ -0,0 +1,27 @@
+#include<bits/stdc++.h>
+using namespace std;
+
+int main() {
+
+	int t;
+	cin>>t;
+	while(t--){
+	    int n;
+	    cin>>n;
+	    int a[n];
+	    map<int,int>s;
+	    for(int i=0;i<n;i++){
+	        cin>>a[i];
+	        s[a[i]]++;
+	    }
+	    int l=0;
+	    for(int i=0;i<n;i++){
+	        if(l<s[a[i]]){
+	            l=s[a[i]];
+	        }
+	    }
+	    cout<<n-l<<endl;
+	  }  
+	
+	return 0;
+}