There are three pairwise uncorrelated random variables $X, Y, Z$
$$E(X) = E(Y) = E(Z) = 0$$
$$E(X^2) = E(Y^2) = E(Z^2) = \sigma^2$$
How we could find minimum and maximum bound on $E(XYZ)$?
I have thougth to play with covariance but I stuck at repeating similiar actions with no effort and have no idea what to do.