Binomial Distribution:

A company is testing a new marketing strategy for their product. They found that the probability of a customer making a purchase after seeing the advertisement is 0.3. The company decides to show the advertisement to 10 customers in each scenario. Calculate the probability of the following scenarios:

1. Exactly 4 customers make a purchase.

2. At least 6 customers make a purchase.

3. No more than 2 customers make a purchase.