6. Forty percent (40%) of corn cob seeds bear single ears, and the other 60% wear them pairs. A single spike seed will produce a single spike ear 29% of the time, while a seed with double spikes will produce ears with simple spikes 26% of the time. Ten seeds are selected at random:

 a) What is the probability that exactly five of these seeds carry a spike simple and produce an ear with a simple ear?

 b) What is the probability that exactly five of these ears produced by these seeds have simple spikes? What is the probability that at most five ears have simple spikes?