It's the * operator e.g. 2 * 3 = 6

Find out more about this solution by inspecting: https://apidock.com/ruby/Enumerable/reduce

What is the (:*) called? I'd like to learn about it. Thanks.

Whoop, sorry, my fault :-)....I've updated the initial function name in Ruby :-)

Kata is asking for function 'findSum', when attempting, it needs the function 'find'

Thanks!
I'm glad you like and enjoyed it! :-)

One of the best Kata's I've worked on so far. Keep up the great work @SteffenVogel_79 !