Question

three coins are tossed find the probability of getting at least two heads​

Answer 1

Answer:

Total possible outcomes in tossing three coins is 2^3 = 8. Outcomes favourable to the event of getting at least 2 heads are (H,H,T),(H,T,H),(T,H,H) & (H,H,H) i.e. 4. Hence, the required probability is 4/8 = 1/2.

Answer 2

Answer:

3/8

Step-by-step explanation:

Atleast 2 head = Exactly 2 heads + all 3 heads

All three heads is (1/2)*(1/2)*(1/2)=1/8

Exactly 2 heads = probability of 2 heads and 1 tail* the order they can show up

=(1/2)*(1/2)*(1/2)*3C2=3/8