Mathematics: What is the theoretical probability of a coin landing tails up?

What is the theoretical probability of a coin

Ответ:

Jasten

31.12.2021

Mathematics

The probability that a fair coin lands tail up is 1/2, which is equal to 0.5.

Step-by-step explanation:

There are two possible outcomes when a coin is flipped (saving for the case when the coin lands on its side.)

The coin lands head-up;The coin lands tail-up.

If the coin is fair, the two outcomes should be equally likely. In that case, apply the following formula:

$\begin{aligned}&\text{Probability that the coin lands tail-up}\\ =&\frac{\text{Number of outcomes that the coin lands tail-up}}{\text{Total Number of equally-likely possible outcomes}}\\=&\frac{1}{2} \\=& 0.5 \end{aligned}$ .

Credit for the phrasing of this probability formula goes to the Khan Academy article "Probability: the basics".

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