Two coins are tossed once,where
E: no tail appears, F: no head appears.Find P (E/F) in each case above.

Explanation

Here S = {HH,HT,TH,TT}
E={HH}, F={TT} `rArr` `EnnF`=`phirArr P(EnnF)=0` therefore `P(E/F)=(P(EnnF))/(P(F))`=0