diff --git a/experiment/posttest.json b/experiment/posttest.json
index e29350b..b30ceeb 100644
--- a/experiment/posttest.json
+++ b/experiment/posttest.json
@@ -2,7 +2,7 @@
   "version": 2.0,
   "questions": [
     {
-      "question": "What does the discharge transistor do in the 555 timer circuit?",
+      "question": "1. What does the discharge transistor do in the 555 timer circuit?",
       "answers": {
         "a": "Charge the external capacitor to start the timing over again",
         "b": "Charge the external capacitor to stop the timing",
@@ -14,7 +14,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "The monostable multivibrator circuit is not an oscillator because ________.",
+      "question": "2. The monostable multivibrator circuit is not an oscillator because ________.",
       "answers": {
         "a": "Its output switches between two states",
         "b": "It requires a sine wave input signal",
@@ -26,7 +26,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "The monostable multivibrator circuit is also know as ________.",
+      "question": "3. The monostable multivibrator circuit is also know as ________.",
       "answers": {
         "a": "One shot",
         "b": "Two shot",
@@ -38,7 +38,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "A monostable 555 timer has one stable states:",
+      "question": "4. A monostable 555 timer has one stable states:",
       "answers": {
         "a": "True",
         "b": "False"
@@ -49,7 +49,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "What is the formula to calculate the time period of the monostable multivibrator.",
+      "question": "5. What is the formula to calculate the time period of the monostable multivibrator.",
       "answers": {
         "a": "T = 0.69 * (R<sub>A</sub> + R<sub>B</sub>) * C",
         "b": "T = 0.69 * (R<sub>A</sub> + 2R<sub>B</sub>) * C",
diff --git a/experiment/pretest.json b/experiment/pretest.json
index ca093bf..c833ca3 100644
--- a/experiment/pretest.json
+++ b/experiment/pretest.json
@@ -2,7 +2,7 @@
   "version": 2.0,
   "questions": [
     {
-      "question": "What is the formula to calculate the time period of the monostable multivibrator.",
+      "question": "1. What is the formula to calculate the time period of the monostable multivibrator.",
       "answers": {
         "a": "T = 0.69 * (R<sub>A</sub> + R<sub>B</sub>) * C",
         "b": "T = 0.69 * (R<sub>A</sub> + 2R<sub>B</sub>) * C",
@@ -14,7 +14,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "When a capacitor charges:",
+      "question": "2. When a capacitor charges:",
       "answers": {
         "a": " the voltage across the plates rises exponentially",
         "b": "the circuit current falls exponentially",
@@ -26,7 +26,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "The ________ is defined as the time the output is active divided by the total period of the output signal.",
+      "question": "3. The ________ is defined as the time the output is active divided by the total period of the output signal.",
       "answers": {
         "a": "active ratio",
         "b": "duty cycle",
@@ -38,7 +38,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "A monostable 555 timer has the following number of stable states:",
+      "question": "4. A monostable 555 timer has the following number of stable states:",
       "answers": {
         "a": "0",
         "b": "1",
@@ -50,7 +50,7 @@
       "difficulty": "beginner"
     },
     {
-      "question": "What is the output pulse width of the waveform at the output of the circuit in the given figure? <br/><p style=\"text-align:center\"><img src=\"images/post_quiz1.png \" style=\"width:350px;height:200px\"></p>",
+      "question": "5. What is the output pulse width of the waveform at the output of the circuit in the given figure? <br/><p style=\"text-align:center\"><img src=\"images/post_quiz1.png \" style=\"width:350px;height:200px\"></p>",
       "answers": {
         "a": "1.65 ms",
         "b": "18.2 ms",