diff --git a/NumberTheory(GCDandLCM).py b/NumberTheory(GCDandLCM).py
new file mode 100644
index 0000000..382734f
--- /dev/null
+++ b/NumberTheory(GCDandLCM).py
@@ -0,0 +1,10 @@
+import math
+
+num1 = 12
+num2 = 18
+
+gcd = math.gcd(num1, num2)
+lcm = num1 * num2 // gcd
+
+print(f"GCD: {gcd}")
+print(f"LCM: {lcm}")