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Two fair coins are tossed together. Find the probability of getting: exactaly one tail and at least one tail.

Solución

Two fair coins are tossed together. Find the probability of getting: exactly one tail and at least one tail.

Solución

\frac{1}{2}

Pasos de solución

The possible outcomes when a coin is thrown two times are

2 \cdot 2

Therefore, the number of possible outcomes:

2^{2}

Find the number of favorable outcomes of getting: exactly 1 tail and at least 1 tail:

2

Probability

= \frac{number of favorable outcomes}{total number of outcomes}

= \frac{2}{2 ^{2}}

Eliminar los terminos comunes:

2

= \frac{1}{2}

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