There are a total of 9 chocolates - 3 each in the flavors of banana, grape and strawberry. There are also 4 children. If each child is allowed to choose their own favorite flavor, what is the probability that all of them will get flavors of their choice?
In an examination, Seoyoon attempted 15 questions correctly and secured 59 marks. If there were two types of questions i.e. of 3 marks and 5 marks, how many questions of 3 marks did she attempt correctly?