SOLUTION: A single ball is taken at random from an urn containing 10 balls numbered 1 through 10. What is the probability of obtaining the following:
a. An even-numbered ball
b. A ball
Algebra.Com
Question 935692: A single ball is taken at random from an urn containing 10 balls numbered 1 through 10. What is the probability of obtaining the following:
a. An even-numbered ball
b. A ball different from 5
c. A ball that is either less than 5 or odd
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
a.
There are 10 balls. Five of them are even (2,4,6,8,10).
Answer: 5/10 = 1/2 (don't forget to reduce all fractions fully)
-------------------------------------------------------
b.
There are 10 balls, 9 of which are not 5. Only 1 ball is labeled 5.
Answer: 9/10
-------------------------------------------------------
c.
There are 4 balls less than 5 (1,2,3,4)
There are 5 odd numbers (1,3,5,7,9)
Combine the two lists and toss out the duplicates to get {1,2,3,4,5,7,9}
There are 7 numbers in this list {1,2,3,4,5,7,9}
Out of 10 total
Answer: 7/10
RELATED QUESTIONS
Please help me solve this question.
A single ball is taken at random from an urn... (answered by gwendolyn)
You are given two urns, each containing a collection of coloured balls. Urn 1 contains... (answered by ikleyn)
An urn contains 4 balls numbered 0 through 3. One ball is selected at
random and removed (answered by math_helper)
A single ball is drawn from an urn containing 10 ball numbered 1 through 10.
Determine... (answered by ikleyn)
A sample of 5 balls is to be selected at random from an urn containing 20 balls numbered... (answered by stanbon)
There are 3 urns containing 2 white and 3 black balls, 3 white and 2 black balls and 4... (answered by richwmiller)
Let urn 1 contains 4 red balls and 2 white balls, and let the urn 2 contain 3 balls of... (answered by harpazo)
Eight balls numbered from 1 to 8 are placed in an urn. If one ball is selected at random, (answered by jim_thompson5910)
six balls numbered from 1 to 6 are placed in an urn. If one ball is selected at random,... (answered by richard1234)