An apartment building has 20 two-bedroom apartments and 8 three-bedroom apartments. If 4 apartments are chosen at random to be r

Question

3 years ago

13

edecorated, what are the probabilities a) All will be two-bedroom apartments

2 answers:

seraphim [82] · Answer 1 · 2022-07-12T17:59:48+03:00

7 0

The answer is 4 of 28. i think so

ankoles [38] · Answer 2 · 2022-07-12T19:29:55+03:00

5 0

A) This is sampling without replacement.
$P(all\ 2\ bedroom)=\frac{20C4}{28C4}=\frac{20\times19\times18\times17}{28\times27\times26\times25}$