QUESTION 2 Combinations: Selecting Items of 2 categories from a larger group A package of 15 resistors has 4 resistors that are defective. We select a group of 3 from among the 15 resistors. a) How many combinations are possible for choosing 3 out of 15? b) How many ways are there to select 2 good resistors and 1 defective resistor from this package? What is the probability of this event? c) How many ways are there to select all 3 defective resistors (and no good resistors) from this package? What is the probability of this event? d) How many ways are there to select all 3 good resistors (and no defective resistors) from this package? What is the probability of this event?

Q: WOW THANKS! Can you help with question 18 too? I realized I already answered 20 after i sent it

A: Here is the solution:

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