
Cristian C. answered 08/16/21
Ph.D. math student (UMN)
Hello Rei,
I can help you with the first question. A randomly selected child eats mango or strawberry... Then you have to count how many children eat mango or strawberry (at least one of the two): That would be six childrend (Childs 1, 3, 5, 6, 8 and 9).
So, the probability that a randomly selected child eats mango or strawberry is 6 out of 10: 6/10 = 3/5.
Contact me for help in the second question and more deep explanations.
Best,