Peas are generated from parents having the green/yellow pair of genes, so there is a .75 probability that an individual pea will have a green pod. a) Find the probability that among 13 pea offspring;...

Peas are generated from parents having the green/yellow pair of genes, so there is a .75 probability that an individual pea will have a green pod. a) Find the probability that among 13 pea offspring; at least 1 pea has a green pod. b)Find the probability that among 8 pea offspring between 2 and 5 have yellow pods.

I know the "trick" here is AT LEAST and BETWEEN, but I am not sure how to work them. I assuming binomial probability, but when I did that, it was wrong, unless I executed the problem incorrectly. Help?!