The weights of three samples from an experiment are 1.25050 g, 2.50055 g, and 2.74099 g. What is a reasonable estimate for the total weight of all three samples?

5.5 g

6.0 g

6.5 g

I don't know.

Jane is cooking beans and rice for dinner tonight. she has 4 cans of black beans, 6 cans of red beans, and 3 cans of garbanzo beans in her cupboard. if she grabs a can of beans without looking at the label, what is the probability of her making black beans and rice for dinner?