(-2,2)
i just did my homework with the same question
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
Answer:
9 months
Step-by-step explanation:
3*12-27
36-27
9
That is a ratio. 7 x 3 = 21 and 13 x 3 = 39.