4 ms·I know that's why i say that in actuality the number of trials is 4. Each trial compounds on the previous.by chegra84 16y agoI know that's why i say that in actuality the number of trials is 4. Each trial compounds on the previous.krschultz 16y agoHe might be saying that some people will fail at it no matter how many times they try.chegra84 16y agoYes some people will fail no matter what cause it's a probability. But it doesn't negate the fact the more you do it the higher the probability you will win.