diff --git a/12_Day_Regular_expressions/12_day_regular_expressions.md b/12_Day_Regular_expressions/12_day_regular_expressions.md
index f5e9bed..c178962 100644
--- a/12_Day_Regular_expressions/12_day_regular_expressions.md
+++ b/12_Day_Regular_expressions/12_day_regular_expressions.md
@@ -430,9 +430,9 @@ console.log(result) // true
 1. The position of some particles on the horizontal x-axis -12, -4, -3 and  -1 in the negative direction, 0 at origin, 4 and 8 in the positive direction. Extract these numbers and find the distance between the two furthest particles.
 
 ```js
-points = ['-1', '2', '-4', '-3', '-1', '0', '4', '8']
-sortedPoints =  [-4, -3, -1, -1, 0, 2, 4, 8]
-distance = 12
+points = ['-12', '-4', '-3', '-1', '0', '4', '8']
+sortedPoints =  [-12, -4, -3, -1, 0, 4, 8]
+distance = 20
 ```
 
 1. Write a pattern which identify if a string is a valid JavaScript variable