answr of prob ques is 44/144
sample space of 1 trial=(H1,H2,H3,H4,H5,H6,T1,T2,T3,T4,T5,T6)
favourable outcomes=2
prob of favourable outcomes in atleast 1 trial=1-prob of unfavourable outcomes in both trials
=1-(10/12)*(10/12)=44/144
Akshay Jain
Masters in Economics
Delhi School of Economics
2013-15