Mathematics, 08.04.2021 05:20 elenadelfosse

Combinations/Permutations help pls aaa A box contains 27 calculators, 5 of which are defective. 5 calculators are selected at random from the box.

Write your answers as a simplified fraction.

A) What is the probability that all of the selected calculators are defective?

The probability that all of the selected calculators are defective is _

.

B) What is the probability that none of the selected calculators are defective?

The probability that none of the selected calculators are defective is _

.

///I normally don't have lots of trouble and honestly I don't have a big problem with the first half of this question at all. I know it's 1/(27 C 5) right? It's just this second part.. I'm so stuck.

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