Test Index

Probability

Question : 46 of 127

Marks: +1, -0

Solution:

Concept:

Probability of at least one success = 1 - probability of no success.

Explanation:

For a fair die, probability of not getting a six in one throw is

\frac{5}{6}

For three independent throws, probability of getting no six is

\left(\frac{5}{6}\right)^3

Thus, probability of at least one six is

1 - \left(\frac{5}{6}\right)^3

Answer:

1 - \left(\frac{5}{6}\right)^3

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