Why number() method is not working in this code

Question

https://code.sololearn.com/WOXZsFnrX5Yf/?ref=app

Answer 1

Number(a) +d

Answer 2

Write Number(a) +d . //a is a string here and d is a number , whenever javascript sees a number and a string it concatenates them instead of adding.

When you do a+Number(d) you add a string(a) and a number (d) and yes d is already a number , no need to convert it to a Number again!

Answer 3

let e = Number(a) + d;

Answer 4

Code not working

Answer 5

But this is not working. It's behave like a string