Question

If three coins are tossed simultaneously, what is the probability of getting at most 1 head

Answer 1

3/8 is the probability o f getting probability

Answer 2

   

If the head and tail are indicated as H and T respectively, then the total possibilities are as follows:

(H, H, H), (H, H, T), (H, T, H), (H, T, T), (T, H, H), (T, H, T), (T, T, H), (T, T, T)

The total no. of outcomes is 8. Among these, there are 3 favourable outcomes in which at most 1 head is got.

(T, T, H), (T, H, T), (H, T, T)

So the probability is 3/8.

Thank you...