3 ms·why is H/T equal to 2p(1-p) rather than p(1-p)?by granfalloon 15y agowhy is H/T equal to 2p(1-p) rather than p(1-p)?mkl 15y agoHT is p(1-p), and TH is also p(1-p), so HT/TH (i.e. either of these) is 2p(1-p).