diff --git a/quito/7.1 b/quito/7.1
new file mode 100755
index 0000000..c2fb079
Binary files /dev/null and b/quito/7.1 differ
diff --git a/quito/7.1.cpp b/quito/7.1.cpp
new file mode 100644
index 0000000..8a057f5
--- /dev/null
+++ b/quito/7.1.cpp
@@ -0,0 +1,56 @@
+#include <bits/stdc++.h>
+#include <iostream>
+using namespace std;
+
+// 7.1, 7.2, 7.3 feladatok megoldasai
+
+bool prim(int n) {
+    if (n == 1) return false;
+    if (n == 2) return false;
+    for (int i = 2; i < n; i++) {
+        if (n%i==0){
+            return false;
+        }
+    }
+    return true;
+}
+
+int convert(string a) {
+    int out = 0;
+    int counter = 1;
+    for (int i = a.size() - 1; i >= 0; i--) {
+        if (a[i] == '1') {
+            out += counter;
+        }
+        counter = counter *2;
+    }
+    return out;
+
+}
+
+int lnko(int n, int k) {
+    vector<int>osztok1;
+    vector<int>osztok2;
+    for (int i = 1; i <= n; i++) {
+        if (n%i==0) osztok1.push_back(i);
+    }
+    for (int i = 1; i <= k; i++) {
+        if (k%i==0) osztok2.push_back(i);
+    }  
+    int out=1;
+    for (int i = 0; i < osztok1.size(); i++) {
+        for (int j = 0; j < osztok2.size(); j++) {
+            if ((osztok1[i] == osztok2[j]) && (osztok1[i] > out)) {
+                out = osztok1[i];
+            }
+        }
+    }
+    return out;
+}
+
+int main() {
+    cout<<prim(13)<<' '<<prim(2)<<' '<<prim(6);
+    cout<<endl<<convert("0101101");
+    cout<<endl<<lnko(38, 14)<<' '<<lnko(16,12)<<' '<<lnko(432,527);
+    cout<<endl<<lnko(284,1283);
+}
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diff --git a/quito/7.5 b/quito/7.5
new file mode 100755
index 0000000..e18531c
Binary files /dev/null and b/quito/7.5 differ
diff --git a/quito/7.5.cpp b/quito/7.5.cpp
new file mode 100644
index 0000000..6423928
--- /dev/null
+++ b/quito/7.5.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+#include <iostream>
+using namespace std;
+
+// 7.5, 7.6 feladatok megoldasai
+
+long long factorial (long long n) {
+    if (n==0) return 1;
+    return n * factorial(n-1);
+}
+
+int stringToInt (string n) {
+    if (n == "") return 0;
+    return (stringToInt(n.substr(0, n.size() -1)) * 10) + n.back() - '0' ; 
+}
+
+int maximum(vector<int> v) {
+
+}
+
+int main () {
+    cout<<factorial(13);
+    cout<<endl<<stringToInt("7839");
+}
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diff --git a/quito/8.1 b/quito/8.1
new file mode 100755
index 0000000..b304c79
Binary files /dev/null and b/quito/8.1 differ
diff --git a/quito/8.1.cpp b/quito/8.1.cpp
new file mode 100644
index 0000000..5920ba8
--- /dev/null
+++ b/quito/8.1.cpp
@@ -0,0 +1,16 @@
+#include <bits/stdc++.h>
+#include <iostream>
+using namespace std;
+
+
+
+int hatvany (int n, int k) {
+    if (k == 0) return 1;
+    return n * hatvany(n, k-1);
+}
+
+
+
+int main () {
+    cout<<hatvany(2,12)<< ' '<<hatvany(5,6)<< ' ' << hatvany(1,3);
+}
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