<prompt> Given an array of numbers, use Python to find the sum of all the numbersarr 3, 6, 9, 12  <response>: To find the sum of all the numbers in the given array arr, you can use Pythons built-in sum function, like this:pythonarr 3, 6, 9, 12total sumarrprinttotalThis will output 30, which is the sum of all the numbers in the array arr. 