Sample Delegation Letter Probability Problems. Help Pleaase?

Probability problems. Help pleaase? - sample delegation letter

I do not know how to get the answer. Is there a way to "uniform" in order to solve these problems?

A)
"Baseball games produced by Electronic Electronic Tempco sent in batches of 24. Before they choose an inspector for quality control, a random sample testing of each 7. If the sample is a bad game, contains the entire batch is rejected. What is the probability that a poorly run exactly 3 games be broadcast? (Round answer to three decimal places.) "

B)
"A student studying for a vocabulary test knows the meaning of 12 words in a list of 26 words. If the test contains 10 words from the study list, what is the probability that at least 8 words of the study are the words that the student knows ? (Round your answer to three decimal places.) "

C)
"Jacobs & Johnson, employs a 17 accounting firm auditors, including 9 accountant. When a delegation of 4 meters randomly selected from the company to attend a conference, it is likely that Wil CPA 4L-selected? (Round answer to three decimal places.) "

Thankssss