diff --git a/lab-python-lambda-map-reduce-filter.ipynb b/lab-python-lambda-map-reduce-filter.ipynb
index 96c9781..ad76c32 100644
--- a/lab-python-lambda-map-reduce-filter.ipynb
+++ b/lab-python-lambda-map-reduce-filter.ipynb
@@ -66,7 +66,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "id": "08463071-9351-4d49-8d29-4fcb817fb177",
    "metadata": {},
    "outputs": [],
@@ -94,12 +94,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "id": "0781335d-39cf-403d-b86a-ca908a09fe55",
    "metadata": {},
    "outputs": [],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "credits=list(filter(lambda n:n[1]=='credit',transactions))\n",
+    "debits=list(filter(lambda n:n[1]=='debit',transactions))"
    ]
   },
   {
@@ -124,12 +126,39 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 93,
    "id": "25073469-7258-4fc6-b0a0-ef8ea57688fe",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[(-1200, 'debit'), (-100, 'debit'), (-250, 'debit'), (-300, 'debit'), (-850, 'debit')]\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "[(-100, 'debit'),\n",
+       " (-250, 'debit'),\n",
+       " (-300, 'debit'),\n",
+       " (-850, 'debit'),\n",
+       " (-1200, 'debit')]"
+      ]
+     },
+     "execution_count": 93,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "print(debits)\n",
+    "sort_descending= lambda a,b:True if a[0]>b[0] else False\n",
+    "sort_descending= lambda a:True if a[0][0]>a[1][0] else False\n",
+    "# v=sort_descending((1,2),(3,4))\n",
+    "j=sorted(debits, key=lambda elem:elem[0], reverse=True)"
    ]
   },
   {
@@ -158,7 +187,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 40,
    "id": "e1de9d03-f029-4e2e-9733-ae92e3de7527",
    "metadata": {},
    "outputs": [],
@@ -169,12 +198,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 99,
    "id": "2f253b7e-5300-4819-b38f-9fc090554f51",
    "metadata": {},
    "outputs": [],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "add_interest= lambda a:a+a*0.05\n",
+    "new_bals=list(map(add_interest,balances))"
    ]
   },
   {
@@ -195,7 +226,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 94,
    "id": "69e24c3b-385e-44d6-a8ed-705a3f58e696",
    "metadata": {},
    "outputs": [],
@@ -209,12 +240,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 98,
    "id": "0906a9b0-d567-4786-96f2-5755611b885e",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[{'balance': 1061.208, 'interest_rate': 0.02}, {'balance': 2060.602, 'interest_rate': 0.01}, {'balance': 546.3635, 'interest_rate': 0.03}]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here\n"
+    "# your code goes here\n",
+    "#old_dict={'balance': 1000, 'interest_rate': 0.02}\n",
+    "def update_bal(old_dict):\n",
+    "    new_dict=old_dict\n",
+    "    new_dict['balance']=old_dict['balance']*(1+old_dict['interest_rate'])\n",
+    "    return new_dict\n",
+    "#print(list(map(update_bal,accounts)))"
    ]
   },
   {
@@ -243,13 +288,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 103,
    "id": "6284dbd3-e117-411e-8087-352be6deaed4",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "-36.75\n"
+     ]
+    }
+   ],
    "source": [
     "from functools import reduce\n",
-    "\n",
+    "def filt_red(new_bals):\n",
+    "    neg_bals=list(filter(lambda x:x<0, new_bals))\n",
+    "    if neg_bals:\n",
+    "        return reduce(lambda x,y:x+y,neg_bals)\n",
+    "    else:\n",
+    "        return 0\n",
+    "    #print(reduce(lambda x,y:x+y, list(filter(lambda x:x<0, new_bals))))\n",
+    "print(filt_red(new_bals))\n",
     "# your code goes here"
    ]
   },
@@ -273,10 +333,18 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 87,
    "id": "da2264b5-298e-4b45-99df-852b94e90d15",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[650, 1600, 275]\n"
+     ]
+    }
+   ],
    "source": [
     "accounts = [\n",
     "    {'balance': 1000, 'withdrawals': [100, 50, 200]},\n",
@@ -284,8 +352,21 @@
     "    {'balance': 500, 'withdrawals': [50, 100, 75]},\n",
     "]\n",
     "\n",
-    "# your code goes here\n"
+    "# your code goes here\n",
+    "def calculate_balance(one_account):\n",
+    "    #one_account['balance']=sum(one_account['withdrawals'])\n",
+    "    return one_account['balance']-sum(one_account['withdrawals'])\n",
+    "resulting=list(map(calculate_balance,accounts))\n",
+    "print(resulting)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "106a9626-07ba-4d6f-86d7-cf8cef2db935",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -304,7 +385,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.9"
   }
  },
  "nbformat": 4,