there are 2 identical bottles. one bottle contains 2 red balls. a bottle is selected at random and a single ball is drawn
what is thwe probability that the bll is red?
4 answers
Since you didn't mention any other colors in the bottles, there's a 100% chance that the ball that is drawn is red.
case 1 :
both bottle give red balls
1/2 * 1/2
= 1/4
case 2 :
one bottle gives red ball
1/2 * 1
=1/2
both bottle give red balls
1/2 * 1/2
= 1/4
case 2 :
one bottle gives red ball
1/2 * 1
=1/2
sorry because of misunderstood of the question.
The above answer is wrong
The above answer is wrong
ok....all right