Test Index

Probability

Question : 37 of 127

Marks: +1, -0

Solution:

Concept:

Probability is the ratio of favorable outcomes to total outcomes.

Explanation:

When two unbiased coins are tossed, the sample space is {HH, HT, TH, TT}.

Total outcomes = 4.

Getting a head means at least one head: outcomes are HH, HT, TH.

Favorable outcomes = 3.

Probability =

\frac{3}{4} = 0.75

Answer:

0.75

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