PLZ HELP SOON Bill and Xiadan each flip a fair coin three times. What is the probability that they will flip the same number of heads?

True or false look at the picture pls : /

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.