How do you get 24 with the numbers 6, 5, 4 and 8

Can someone me out here and the tell me the greatest common factor

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.