Ihave another question which expression shows 4 divided by the expression 468-466?

4/(468-466)
4/468-466
(468-466)/4

I pretty sure the second one is the answer because it says 4 is divided by the expression so there would be no parenthesis around the answer but if it had said 4 divided by the difference of 468-466 then you would put parenthesis because it's saying that they want the answer of the expression not the expression it self. Hope this helps

It is blindness and randomization