Jenna is eating 2 oranges a day to help her diet. She is doing this for all 42 of her oranges. How many days of her diet will Jenna be on when she is done with her oranges?

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.