Question

A coin is tossed thrice find the probability of getting at least 1 head

Answer 1

hh
th
TT
ht
........are the probability

Answer 2

Hey friend,

_____________________________________________________________

Tossing of a coin has two probabilities i.e head or tail.

When the first time the coin is tossed the result may be H(head) or T (tail).

Similarly second and third time .

The results can be as follows :

TTT

TTH

THH

HHH

HHT

HTT

HTH

THT

No of times H comes atleast once are 7.

Total no of possible outcomes are 8.

Probability = Total number of outcomes

Total no of possible outcomes

= $\frac{7}{8}$

_____________________________________________________________

Hope this helped you !!