the probability of getting heads-heads-heads if you toss a coin three times is 1 out of 9.
the probablity of getting a head is 1/2 and 7 heads consecutively is (1/2)^7
30 maybe but i say 35 or 31
2 to 1
A fifty-cent piece.
75
the probablity of getting a head is 1/2 and 7 heads consecutively is (1/2)^7
Each independent trial has a 1/2 probability that a heads will result. So for a sequence of 4 heads you have 1/2 x 1/2 x 1/2 x 1/2 = 1/16
50%.
1 in 12 chance
50/50
The probability that a single coin flip will come up heads is 0.5.
Since there are 2 outcomes for a coin toss, and you will toss the coin 3 times the number of outcomes are 23 or 8. Since H-T-H can occur only 1 way, the probability of the H-T-H sequence is 1/8.
5 outcomes if the sequence is ignored. 24 = 16 outcomes in all.
The probability of getting five heads out of 10 tosses is the same as the probablity of getting five tales out of ten tosses. One. It will happen. When this happens, you will get zero information. In other words, this is the expected result.
1 out of 555555
The answer depends on what you are looking for: the full sequence of results, the number of heads (or tails) the number of runs, the lengths of runs, or whatever.
The notation P H H H T T represents a specific sequence of outcomes from flipping a coin five times, where "H" stands for heads and "T" for tails. In this case, the sequence indicates that the first three flips resulted in heads, followed by two tails. The probability of obtaining this exact sequence in five flips of a fair coin is ( (1/2)^5 = 1/32 ), since each flip is independent and has a 50% chance of being heads or tails.