Please give an explanation

A poll asked seniors about their comfortability with the use of technology. 24% of the seniors who responded said, they are comfortable with it. What is the probability that a group of 33 seniors will contain:

a) Exactly 2 seniors who are comfortable with the use of technology. Express your answer in decimal form correct to 4 decimal places. For example, 0.1111

b) More than 2 seniors who are comfortable with the use of technology. Express your answer in decimal form correct to 4 decimal places. For example, 0.1111