# Altering the array: a = [3, 2, 4, 6, 3, 8] a.delete(3) #=> 3 a #=> [2, 4, 6, 8] # Creating new array: b = [3, 2, 4, 6, 3, 8] b - [3] #=> [2, 4, 6, 8] b #=> [3, 2, 4, 6, 3, 8]