adding tricky js Questions collection

Author: rohan-paul

Javascript/Tricky-JS-Problems/Collection-of-Tricky-JS-Questlions.md

@@ -50,14 +50,10 @@
 
 **Answer**: 12.3
 
-#### Question: What is the value of `Math.max([2,3,4,5]);`
-
-Answer: NaN
-
 #### Question: What is value of `3 instanceof Number`
 
-Answer: false
+**Answer**: false
 
 #### Question:null == undefined
 
-Answer: true
+**Answer**: true

Javascript/Tricky-JS-Problems/What-is-the-value-of-Math.max([2,3,4,5]).md

@@ -0,0 +1,18 @@
+#### Question: What is the value of `Math.max([2,3,4,5]);`
+
+Answer: NaN
+
+#### Explanations
+
+Because `max()` is a static method of Math, you always use it as `Math.max()`, rather than as a method of a Math object you created (Math is not a constructor).
+
+If no arguments are given, the result is -Infinity.
+
+If at least one of arguments cannot be converted to a number, the result is NaN.
+
+When you call Math.max with array parameter like
+
+```
+Math.max([1,2,3])
+
+```