Math  /  Data & Statistics

QuestionUse the tree diagram below to work out the probability that at least one of the two customers buys a vanilla ice cream. Give your answer as a fraction in its simplest form.

Studdy Solution
Use complementary probability to find the probability that at least one customer chooses vanilla.
- The probability of at least one choosing vanilla is the complement of both choosing strawberry.
12549=49492549=24491 - \frac{25}{49} = \frac{49}{49} - \frac{25}{49} = \frac{24}{49}
Simplify the fraction:
- The greatest common divisor of 24 and 49 is 1, so the fraction is already in its simplest form.
The probability that at least one customer buys a vanilla ice cream is:
2449\boxed{\frac{24}{49}}

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