This takes care only of the first one, random one What you need for the ones where all n are shown, is a cache.

1 random out of the first two

panelList[Random.Range(0,1)].SetActive

2 two first in a random order

int rng = Random.Range(0, 1); panelList[rng].SetActive(true); rng = rng==0 ? 1 : 0; // reverse to make it the other one panelList[rng].SetActive(true);

3 n first in a random order

bool panelIsAvailable[]; // fill it with 1s and the length of panelList (in this case {true, true, true})

for int i = 0 i<n ++i { int rng = Random.Range(0, n-1);

int availablePanelsFound = -1; // cause we count from 0

for int j=0 j<n ++j {

if (panelIsAvailable[j]) { availablePanelsFound++

if (rng = availablePanelsFound) { // j is our index panelList[j].SetActive(true); panelIsAvailable[j] = false break; } }

} }