Actually its the same every time you flip it. . It's 50/50 every single time (unless it somehow by some small chance it lands on the edge of the coin, which is some infintesimal chance). . Thats why it makes no sense to bet black when its hit red 20 previous times on a roulette wheel .. However, the odds of it hitting heads 99 times in a row and then hitting tails is the ridiculous odds. ..
Exactly and for bitcoin it means, that with each share there is 1/difficulty chance to find a block, while it's not guaranteed that you'll find one after difficulty shares, but on average you should
Statistically there should be 50 heads/reds and 50 tails/blacks form 100 on average, but it is possible to have 100 tails/blacks in a row just like any other number
again statistically - once in every 100 throws there will be exactly 42 heads
and again - half of the 100 throws series will have more than 50 heads ...
and it's possible that all those 'over 50 heads' series are from 100 heads
