@@ -0,0 +1,206 @@
+{
+"cells": [
+{
+"cell_type": "code",
+"execution_count": 2,
+"metadata": {},
+"outputs": [
+{
+"data": {
+"text/plain": [
+"720"
+]
+},
+"execution_count": 2,
+"metadata": {},
+"output_type": "execute_result"
+}
+],
+"source": [
+"a =6\n",
+"result=1\n",
+"lst = []\n",
+"for i in range(a,0,-1):\n",
+" result = result*i\n",
+" lst.append(result)\n",
+"\n",
+"lst[a-1]"
+]
+},
+{
+"cell_type": "code",
+"execution_count": 3,
+"metadata": {},
+"outputs": [
+{
+"name": "stdout",
+"output_type": "stream",
+"text": [
+"5 x 1 = 5\n",
+"5 x 2 = 10\n",
+"5 x 3 = 15\n",
+"5 x 4 = 20\n",
+"5 x 5 = 25\n",
+"5 x 6 = 30\n",
+"5 x 7 = 35\n",
+"5 x 8 = 40\n",
+"5 x 9 = 45\n",
+"5 x 10 = 50\n"
+]
+}
+],
+"source": [
+"num = 5\n",
+"for i in range(1,11):\n",
+" print(num,\" x \",i,\"=\",num*i)"
+]
+},
+{
+"cell_type": "code",
+"execution_count": 14,
+"metadata": {},
+"outputs": [
+{
+"name": "stdout",
+"output_type": "stream",
+"text": [
+"0\n",
+"1\n",
+"1\n",
+"2\n",
+"3\n",
+"5\n",
+"8\n",
+"13\n"
+]
+}
+],
+"source": [
+"num =20\n",
+"z=0\n",
+"x=0\n",
+"y=1\n",
+"while z<=num:\n",
+" print(z)\n",
+" x=y\n",
+" y=z\n",
+" z=x+y\n",
+" "
+]
+},
+{
+"cell_type": "code",
+"execution_count": 21,
+"metadata": {},
+"outputs": [
+{
+"name": "stdout",
+"output_type": "stream",
+"text": [
+"Enter a number: 153\n",
+"Its a Armstrong number\n"
+]
+}
+],
+"source": [
+"num = int(input(\"Enter a number: \"))\n",
+"original = num\n",
+"sum = 0\n",
+"while (num > 0):\n",
+" sum = sum+(num%10)*(num%10)*(num%10)\n",
+" num=num//10\n",
+"if original == sum:\n",
+" print(\"Its a Armstrong number\")\n",
+"else:\n",
+" print(\"Not an Armstrong Number\")"
+]
+},
+{
+"cell_type": "code",
+"execution_count": 23,
+"metadata": {},
+"outputs": [
+{
+"name": "stdout",
+"output_type": "stream",
+"text": [
+"153\n",
+"370\n",
+"371\n",
+"407\n",
+"1634\n"
+]
+}
+],
+"source": [
+"# Program to check Armstrong numbers in a certain interval\n",
+"\n",
+"lower = 100\n",
+"upper = 2000\n",
+"for num in range(lower, upper + 1):\n",
+"\n",
+" # order of number\n",
+" order = len(str(num))\n",
+" \n",
+" # initialize sum\n",
+" sum = 0\n",
+"\n",
+" temp = num\n",
+" while temp > 0:\n",
+" digit = temp % 10\n",
+" sum += digit ** order\n",
+" temp //= 10\n",
+"\n",
+" if num == sum:\n",
+" print(num)\n"
+]
+},
+{
+"cell_type": "code",
+"execution_count": 24,
+"metadata": {},
+"outputs": [
+{
+"name": "stdout",
+"output_type": "stream",
+"text": [
+"The sum is 171\n"
+]
+}
+],
+"source": [
+"num = 18\n",
+"if num < 0:\n",
+" print(\"Enter a positive number\")\n",
+"else:\n",
+" sum = 0\n",
+" # use while loop to iterate until zero\n",
+" while(num > 0):\n",
+" sum += num\n",
+" num -= 1\n",
+" print(\"The sum is\", sum)"
+]
+}
+],
+"metadata": {
+"kernelspec": {
+"display_name": "Python 3",
+"language": "python",
+"name": "python3"
+},
+"language_info": {
+"codemirror_mode": {
+"name": "ipython",
+"version": 3
+},
+"file_extension": ".py",
+"mimetype": "text/x-python",
+"name": "python",
+"nbconvert_exporter": "python",
+"pygments_lexer": "ipython3",
+"version": "3.8.5"
+}
+},
+"nbformat": 4,
+"nbformat_minor": 4
+}