Question

If a coin is tossed three times then the probability of getting at least one head

Answer 1

hence the probability of getting at least one head

P(E)= 7/8

Answer 2

Probability of getting one head=favourable outcame/total outcome

Favourable outcome=3 heads(1 head at one toss,so while tossing 3 times p(e)=3)

Total outcome=6(while tossing 3 times,3 head and 3 tail .so total outcome= 3+3= 6)

P(e)=3/6 =1/2