sudo dpkg -P [package]

sudo apt-get --purge remove [package]

sudo apt remove <package name>

sudo apt-get --purge remove 

sudo dpkg --purge rvm <package_name>

​

sudo dpkg --remove --force-remove-reinstreq package_name

sudo apt-get remove package_name

let val1 = 10;

              let val2 = 5;

              function addNum(num1, num2){

                  let total  = num1  + num2;

                  return total;

              }

              let result1 = addNum(val1, val2)

              let result2 = addNum(10, 2)

              ```

          1.  Memory Creation Phase: Here, In 1st cyle we will get

            - val1 -> undefined

            - val2 -> undefined

            - addNum -> defination

            - result1 -> undefined

            - result2 -> undefined

          2.  Execution Phase:

            - val1  <- 10

            - val1  <- 5