Question
A container holds 15 orange, 9 purple, and 6 gray balls.
If 2 balls are picked at random without replacement, find the probability that the first ball is orange and the second ball is either purple or gray.Solution
ATQ, Total number of balls = 15 + 9 + 6 = 30 Case I: First ball is orange and the second ball is purple. Probability = (15/30) × (9/29) = 45/145 = 9/29 Case II: First ball is orange and the second ball is gray. Probability = (15/30) × (6/29) = 30/145 = 6/29 Required probability = (9/29) + (6/29) = 15/29
How many biosphere reserves are there in India?
Which one of the following statements is not true about United Nations Sustainable Development Goals (UNSDG)?
In December 2021, Mithila Makhana of which state got the GI tag?
The state's definition is given in which article of Indian Constitution?
The 'Sugar Bowl of the World' is:
Which metro has become first ever to receive power generated from a waste to energy plant?
Which ports belong to the western coast of India?
Who among the following was the first elected King of the Pala Dynasty in Kamarupa?
As per Nov 2020, How many countries have membership in the World Trade Organisation?
What effect does adding salt to ice have on its melting point?Â