.5
Since the coin only has two sides, the probability of getting either heads or tails in any one toss is 1 in 2, or 50%. 50 precent chance. Everytime you toss it, 50 percent.
at least one tail
Each coin toss is either a head or tail. The tosses done before have no impact on the toss going on. There are always (mathematical speaking) a 50-50 chance of head or tail. If you had 100 tails in a row doesn't matter. It's still 50-50. The prob. of head in 6th (or 57th or whatever) toss is 50%.
Each coin toss is either a head or tail. The tosses done before have no impact on the toss going on. There are always (mathematical speaking) a 50-50 chance of head or tail. If you had 100 tails in a row doesn't matter. It's still 50-50. The prob. of head in 6th (or 57th or whatever) toss is 50%.
you have one twelfth chance
two ways, you toss a head or a tail...
Knowing the results in advance, there is a 7/10 chance that the first toss is heads. In this case "seven out of ten" is quite literal. The first toss is one of the 10, and 7 of them came up heads, so 7/10 is the chance that this particular one is one of the heads.
Assuming a two-sided coin, and that you make the the toss, the probability of tossing a head or a tail is 100%. The probability of tossing a head is 50%. The probability of tossing a tail is 50%.
In a single toss? zero. In two tosses, well that's a different question. Possible combinations are TT, HT, TH and HH, of which 2 of the 4 are one head and one tail. So probability is 0.50 in two tosses.
there is even chance of having heads or tails since there is only 1 head and 1 tail on a penny.
One in six
One side of a coin usually has a "head" of someone. The other side is the tail.