CBSE Class 10 Answered
a bag contains 5 red balls and some blue balls if the probability of deriving a blue ball is double than that of a red ball, find the number of blue balls in the bag
Asked by | 30 Jan, 2012, 08:36: PM
Expert Answer
Let number of blue balls be b
Total number of balls = 5 + b
Probability of picking a red ball, P(R) = 5/(5 + b)
Probability of picking a blue ball, P(B) = b/(5 + b)
Given, P(B) = 2 x P(R)
implies 5/(5 + b) = 2 {5 / (5 + b)}
Therefore, b = 10
Number of blue balls in the bag = 10
Answered by | 30 Jan, 2012, 09:59: PM
Application Videos
Concept Videos
CBSE 10 - Maths
Asked by aadityaanand2008 | 02 Jan, 2023, 11:22: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by kavitajasmine12345 | 02 Jan, 2022, 11:45: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by Trisha Gupta | 23 Sep, 2021, 06:57: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by shwetarai12345678910 | 12 Oct, 2020, 06:24: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by acshanadhana15 | 06 Aug, 2020, 01:53: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by drhimasingh | 09 Mar, 2020, 11:06: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by officialmehak26 | 03 Feb, 2020, 03:02: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by officialmehak26 | 02 Feb, 2020, 08:08: PM
ANSWERED BY EXPERT