There are 10 rolls of film in a box and 3 are defective. two rolls are selected without replacement. what is the probability of
selecting a defective roll followed by another defective roll?
1 answer:
P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9
P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066
Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066
You might be interested in
Answer:
The second glue stick
Step-by-step explanation:
Answer:
with what?
Step-by-step explanation:
Is this like geometry or What
You need to add 2+3+4
divid into 1/3
and your answer is 0.037 longated
Answer:
It's 6/7
Step-by-step explanation: