Write a range function that takes two arguments, start and end, and returns an array containing all the numbers from start number to (and including) end.

Next, write a sum function that takes an array of numbers and returns the sum of these numbers. Run the previous program and see whether it does indeed return 55.

console.log(range(1, 10)); // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] console.log(sum(range(1, 10))); // 55

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