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Ne4ueva [31]
3 years ago
8

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

Mathematics
2 answers:
Elenna [48]3 years ago
5 0

Answer: 1:2

Step-by-step explanation:

IgorC [24]3 years ago
3 0

Answer:

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.)

  1. The coin lands head-up;
  2. 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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