ANSWER

EXPLANATION
We want to find an odds ratio from a given probability, which is

We subtract the numerator 1 from the denominator 4 to obtain

The answer is the number of unfavorable outcomes.
The Odds can then be expressed as

The ratio of favourable outcomes to unfavorable outcomes.
Or
Answer:
a,d,e and f.
Step-by-step explanation:
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Four different colours I believe. Because it says each ticket type will be a different colour. Therefor, adult (1), child (2), 1-day (3), 2-day (4).
Hope this was helpful and correct!