How many different ways can a contest judge select 5 finalists from 20 contestants?

Jasmine wants to eat at 8: 00pm her meal takes 65mins to cook what time does she need to put the meal in the oven

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)