# How to evaluate an expression [closed]

I have a 3-dimensional array of numbers say A. I want to evaluate the following expression.

$$\displaystyle\sum_{\sigma,\tau \in S_6}(\Pi_{i=1}^6A(i,\sigma(i),\tau(i)))$$. $$S_6$$ is the symmetric group in 6 variables.

How can I evaluate this in Mathematica?

## closed as off-topic by MarcoB, C. E., m_goldberg, bbgodfrey, Alex TrounevOct 17 at 17:38

This question appears to be off-topic. The users who voted to close gave this specific reason:

• "This question cannot be answered without additional information. Questions on problems in code must describe the specific problem and include valid code to reproduce it. Any data used for programming examples should be embedded in the question or code to generate the (fake) data must be included." – MarcoB, C. E., m_goldberg, bbgodfrey, Alex Trounev
If this question can be reworded to fit the rules in the help center, please edit the question.