Tom is in Ms. Zhu’s class. To choose 4 students from her class of 24 students to answer questions. Ms. Zhu’s will put 24 cards,
each with the name of a different student from her class on it, in a box. Next, Ms. Zhu will randomly draw 4 cards from the box without replacing any of the cards. What is the probability that Tom’s card will NOT be drawn?
Do you mean half an hour because if she can paint 2/3 of each section in half an hour, it would take her 3 hours to paint all 9 sections. I hope this is correct.