The author posted a question in Homework
Please help with probability theory? and got a better answer
Response from Дима[+++]
not less than two coins - that means 2, 3, 4 P n>1 =P 2 +P 3 +P 4 = 6+4+1 * 0.5 ^4=0.6875?
Response from 0[+++++]
at least two coins means 2 3 4 P n>1=P 2 +P 3 +P 4= 6+4+1 * 0.5 ^4=0.6875
at least two coins means 2 3 4 P n>1=P 2 +P 3 +P 4= 6+4+1 * 0.5 ^4=0.6875
Response from 0[+++++]
a 0.5*0.5 + 0.5*0.5= 0.5= 50 b 0.5*0.5*0.5= 0.0625=6.25
a 0.5*0.5 + 0.5*0.5= 0.5= 50 b 0.5*0.5*0.5= 0.0625=6.25