Genetic disease

One genetic disease was tested positive in both parents of one family. It has been known that any child in this family has a 25% risk of inheriting the disease. A family has three children. What is the probability of this family having one child who inherited this genetic disease?

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You need to know the following knowledge to solve this word math problem:

statistics

binomial distribution

combinatorics

probability
binomial coefficient

Grade of the word problem

high school

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