Question

Free coins are tossed together find the probability of getting exactly two head at least two head at least two tail

Answer 1

Answer:

s={HHH,HTH,HTT,TTT,THT,THH}

n(s)=6

Step-by-step explanation:

event a=getting exactly 2 head

A={HTH,THH}

n(a)=2

p(a)=n(a)\ n(s)=2\6=1\3

event b=at least 2 head

B={HHH,HTH,THH}

n(b)=3

p(b)=n(b)\ n(s)=3\6=2

event c=at least 2 tail

C={HTT,TTT,THT}

n(c)=3

p(c)=n(c)\n(s)=3\6=1\2