Answer:
5 times
Step-by-step explanation:
After the 3rd pick we have: 4 white, 3 red and 8 black marbles.
The probability that the 4th marble is black is:
P ( Black ) = 8 / 15 = 0.5333
After the 4th pick we have: 4 white, 3 red and 7 black marbles.
P ( Red or Black ) = 10 / 14 = 5 / 7 = 0.7143
Answer:
it might be 390
Step-by-step explanation:
hope this helps
Answer:
171
Step-by-step explanation:
Answer:
{x,y} = {19/12,5/6}
Step-by-step explanation: