add answers

Author: Dipa-Sarker

Sprint-1/2-mandatory-errors/3.js

@@ -1,9 +1,19 @@
 const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+console.log(cardNumber.toString());
+const cardNumber1 = cardNumber.toString()
+const last4Digits = cardNumber1.slice(-4); 
+console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
+// I think slice () works for strings or arrays not for numbers. That's why the code won't work.
 // Then run the code and see what error it gives.
+// After running code TypeError: cardNumber.slice is not a function this error shows.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
-// Then try updating the expression last4Digits is assigned to, in order to get the correct value
+// It gives this error because cardNumber doesn't have slice method. My prediction was beacuse 
+// cardNumber is number not string and the difference is that slice method called but it
+// doesn't exist on that type.
+// Then try updating the expression last4Digits is assigned to, in order to get the correct
+// value
+// Updated the expression in order to get in to the correct value.