JEE Class main Answered
come on with the answer
Asked by swetakg60361 | 04 Feb, 2019, 05:30: PM
Expert Answer
Figure shows the different possibility of selecting the ball.
If in first draw is green ball, probability of drawing green ball, p(g) = (2/7).
Then after adding red ball, probability of selecting red ball, p(r) = (6/7)
Hence combined probability of selecting first green ball then second time red ball is p(g & r) = (2/7)×(6/7) = 12/49 ................(1)
If in first draw is red ball, probability of drawing red ball, p(r) = (5/7).
Then after adding green ball, probability of selecting red ball, p(r) = (4/7)
Hence combined probability of selecting first red ball then second time red ball is p(r & r) = (5/7)×(4/7) = 20/49 ................(2)
By adding (1) and (2), probability of drawing red ball second time = (12/49) + (20/49) = 32/49
Answered by Thiyagarajan K | 05 Feb, 2019, 05:32: PM
Application Videos
-
Finding ratio of lengths of sides of a triangle when th ...
This explains how to find the angles of a triangle using the relation betwe... -
Distance of a point lying on the square and circle from ...
The question solved in this video uses the standard equation of a circle is... -
Area of triangle formed by tangent & normal to circ ...
The video explains how to find the area of a triangle formed by the tangent... -
Solving the DE using variable separation method
The video explains to find the solution of a differential equation using th... -
Solution of a Linear DE using Integrating factor
Question solved in the video explains to find the solution of linear differ...
Concept Videos
-
Properties of Inverse Trigonometry Part - 1
This video explains the properties of inverse trigonometric applications an... -
Trigonometric identities and problems
Fundamental trigonometric identities and problems based on them. Sign Conve... -
Graphical representation of inverse trigonometric funct ...
Graphical representation of inverse trigonometric functions and principle ... -
Degree measure and Radian measure ...
This video explains the concept of negative & positive angles, conversion o... -
Continuous and Discontinuous function
Understand the meaning of function to be continuous and discontinuous, comb...
JEE main - Maths
Asked by kakumanumanoj282 | 20 Apr, 2024, 06:07: PM
ANSWERED BY EXPERTJEE main - Maths
Asked by nirmalraulji5 | 18 Apr, 2024, 09:03: PM
ANSWERED BY EXPERT
JEE main - Maths
Asked by veerababukoppisettiveerababu3 | 17 Apr, 2024, 05:49: PM
ANSWERED BY EXPERTJEE main - Maths
Asked by usakoyalshailesh | 15 Apr, 2024, 09:48: AM
ANSWERED BY EXPERT
JEE main - Maths
Asked by sharmalalita847 | 14 Apr, 2024, 09:21: PM
ANSWERED BY EXPERTJEE main - Maths
Asked by sarthakshukla7275 | 14 Apr, 2024, 01:29: PM
ANSWERED BY EXPERTJEE main - Maths
Asked by ashwinskrishna2006 | 14 Apr, 2024, 11:58: AM
ANSWERED BY EXPERT
