Assume that 11 people, including the husband and wife pair, apply for 4 sales positions. people are hired at random.
(1) what is the probability that both the husband and wife are hired?

(2) what is the probability that one is hired and one is not?

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

He concluded that a heavier object dropped from the same height as a lighter object will land

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?