Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

bag contains 4 red & 5 black balls. another contains 3 red & 6 black balls. one ball is drawn from first bag & two balls from second bag. find prob that out of these three balls one is red & two are black
Asked by nishu | 17 Jun, 2013, 06:53: PM
answered-by-expert Expert Answer
Probability that out of the 3 balls, 2 are red and one is black would be equivalent to the sum of probability of drawing either a red ball from the first bag and then drawing a red and black ball from the second one and probability of drawing  a black ball from the first bag and then drawing 2 red balls from the second bag. 
 
So P(RRB)  = R(RB from first bag)*P(R from the second bag) + P(RR from the first bag) * P(B from the second bag)
 
Answered by | 18 Jun, 2013, 05:13: AM
CBSE 12-science - Maths
Asked by armaanjain840 | 20 Dec, 2023, 05:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Maths
Asked by 1999shaileshraj | 22 Feb, 2020, 11:50: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Maths
Asked by lovemaan5500 | 07 Feb, 2020, 09:47: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×