A factory manufactures 20 suit cases every hour for the first 4 hours of a particular day. Then it stops production for 2hours to carry out some maintenance work. After that, it increases production by manufacturing 40 suit cases every hour for the next 3 hours

probability for j is 1/4

while

a is 1/6

the coach can choose 4 members to send to competition in 1680 ways. the correct answer between all the choices given is the second choice. i am hoping that this answer has satisfied your query and it will be able to you in your endeavor, and if you would like, feel free to ask another question.