It depends on what variable the probability ratio was for! The random variable could have been the number of heads minus the number of tails, for example.
The probability is 0, since there will be some 3-tosses in which you get 0, 1 or 3 heads. So not all 3-tosses will give 2 heads.
The probability is 1 out of 5
1/4
If both tosses are fair, the probability of that outcome is one in four.
The conditional probability is 1/4.
The probability is 0, since there will be some 3-tosses in which you get 0, 1 or 3 heads. So not all 3-tosses will give 2 heads.
The probability is 1 out of 5
1/4
If both tosses are fair, the probability of that outcome is one in four.
It is 3/8.
2 out of 3 i think
0.53 = 0.125.
33%
The conditional probability is 1/4.
The number of total outcomes on 3 tosses for a coin is 2 3, or 8. Since only 1 outcome is H, H, H, the probability of heads on three consecutive tosses of a coin is 1/8.
In two tosses: 1/4.
It is 0.3438