Doubt regarding the solution in Prepswift - Arithmetic Operations Question

Hello everyone!

I had a doubt regarding the Arithmetic Operations question.2 in the exercise ( prepswift)

The question states:

Which of the following is equivalent to the the number 4 being added to itself a total of 10 times?
Answer choices:
4+10, 4−10, 4×10, 4/10, 4!, 4^10, 10^4

I know as per the choices given its 40 i.e. 4x10.

However, the language of the question seems to be a bit confusing.
Here’s what I mean : 4 being added to itself 1 time : 4+4 = 8
4 being added to itself 2 times : 4+4+4 = 12
4 being added to itself (n) times : 4 + 4n = 4(n+1)

So I think the answer should be 44 and not 40. Please correct me if I’ve misinterpreted the language of the question.

4 + 4 is 4 added twice; at least that’s how I’d interpret it. But I’ll need to check with @gregmat.

My problem if there was 44 in the answer choices I would definitely choose it.

If you take a number and add this number to itself, what do you end up with? Don’t you think its twice of that number?