Then notation [A]⁴ is equivalent to which of the following?

Question

Quizplus · Accepted Answer

In the given notation, S represents sum and P represents product. U1 indicates that the first element is unique and does not have a partner for performing the sum or product operation. Therefore, the notation can be written as: [A] + [A] + [A] + [A] = 4[A]. 
Alternatively, it can be written as [A] × [A] × [A] × [A] = [A]^4. 
Therefore, the correct choice is C, which represents the product of [A] four times.

Then Notation [A]4 Is Equivalent to Which of the Following

Then Notation [A]⁴ Is Equivalent to Which of the Following