Urn Problem: Balls and Colors
Interactive Video
•
Mathematics, Science
•
6th - 8th Grade
•
Practice Problem
•
Hard
Sophia Harris
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the initial composition of the balls in the urn?
Two white balls, three black balls, one gray ball
One white ball, two black balls, three gray balls
Two white balls, one black ball, three gray balls
Three white balls, two black balls, one gray ball
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the possible color of the additional ball added to the urn?
Only white
Only black
Only gray
White, black, or gray
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many balls are there in total after adding the new ball?
Five
Seven
Six
Four
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total number of balls removed from the urn?
Three
Six
Four
Five
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many of the removed balls were white?
One
Two
Four
Three
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the color of the remaining balls in the urn?
White, black, and gray
Only black
Only white
Only gray
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the certainty about the color of at least one remaining ball?
At least one ball is red
At least one ball is gray
At least one ball is black
At least one ball is white
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