71% of all students at a college still need to take another math class. If 5 students are randomly selected, find the probability that a. Exactly 2 of them need to take another math class.  b. At most 2 of them need to take another math class.  c. At least 3 of them need to take another math class.  d. Between 2 and 4 (including 2 and 4) of them need to take another math class.   WHAT IS THE ANSWER TO THIS QUESTION? PART (D)

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