The Gateway to Computer Science Excellence
First time here? Checkout the FAQ!
0 votes
An urn contains 10 black and 10 white balls. Draw 3

b) with replacement . what is probability that all three are white
asked in Probability by Active (5.1k points) | 31 views

1 Answer

0 votes
Probability of selecting the 1st ball as white=10/20

Since replacement is allowed, probability of selecting the second ball as white =10/20

Similarly, the probability of selecting the third ball as white=10/20

Therefore, the required probability = (10/20)^3=1/8
answered by Active (2.4k points)

Related questions

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true

47,111 questions
51,359 answers
66,689 users