sum_of cubes_squares_of _1st_n_naturalnumbers.ipynb

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     "text": [
      "ENTER THE RANGE FOR FIRST N NATURAL NUMBERS = 8\n",
      "DIFFERENCE BETWEEN OF CUBES AND SUM OF SQUARES =  1092\n",
      "SUM OF CUBES OF FIRST N NATURAL NUMBERS =  1296\n",
      "SUM OF SQUARES OF FIRST N NATURAL NUMBERS =  204\n"
     ]
    }
   ],
   "source": [
    "# Write a programm to find sum of cubes of 1st n natural numbers when difference bettween sum of squares of 1st n natural numbers is odd\n",
    "#otherwise the sum of the sum of the squares of 1st n natural numbers\n",
    "n = int(input(\"ENTER THE RANGE FOR FIRST N NATURAL NUMBERS = \"))\n",
    "sum_cubes = 0\n",
    "sum_sqaures = 0\n",
    "for i in range(1,n):\n",
    "    sum_cubes = (n * (n + 1)/2) ** 2\n",
    "    sum_squares = n * (n + 1) * (2 * n + 1)/6\n",
    "difference = sum_cubes - sum_squares\n",
    "print \"DIFFERENCE BETWEEN OF CUBES AND SUM OF SQUARES = \",difference\n",
    "if difference % 2 == 0:\n",
    "    print \"SUM OF CUBES OF FIRST N NATURAL NUMBERS = \",sum_cubes\n",
    "    print \"SUM OF SQUARES OF FIRST N NATURAL NUMBERS = \",sum_squares\n",
    "else:\n",
    "    print \"DIFFERENCE BETWEEN OF CUBES AND SUM OF SQUARES = \",difference"
   ]
  }
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