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Probability Involving Returning And Keeping Objects
Test Description: Probability involving returning and keeping objects
Instructions: Answer all questions to get your test result.
1) From a bag containing 3 red marbles and 2 blue, Gerardo draws 1 blue marble and puts it back. What is the probability that he will draw a blue marble again.
A
2/4 (= 1/2)
B
2/5
C
1/5
D
1/4
2) From a bag containing 3 red marbles and 2 blue, Gerardo draws 1 blue marble and keeps it. What is the probability that he will draw a blue marble again.
A
2/4 (= 1/2)
B
1/4
C
2/5
D
1/5
3) From a bag containing 3 red marbles and 2 blue, Gerardo draws 1 red marble and puts it back. What is the probability that he will draw a red marble again.
A
3/4
B
2/4 (= 1/2)
C
2/5
D
3/5
4) From a bag containing 3 red marbles and 2 blue, Gerardo draws 1 red marble and keeps it. What is the probability that he will draw a red marble again.
A
2/4 (= 1/2)
B
2/5
C
3/4
D
3/5
5) There are four cards, a jack, a queen, a king, and an ace. If Martha draws a card and puts it back, what is the probability that she will get a king?
A
2/5
B
2/4 ( = 1/2)
C
1/4
D
1/5
6) There are five cards, a ten, a jack, a queen, a king, and an ace. If Sage draws a king and keeps it, what is the probability that he will get a jack?
A
1/5
B
1/4
C
2/5
D
2/4 ( = 1/2)
7) A bag has 10 yellow marbles and 3 purple marbles. If you want to select one marble, how many total possibilities (choices) do you have.
A
13
B
10
C
3
D
1
8) Chris found that probability of a selection of one marble from a bag of 22 marbles is 1/22. What is the total number of possibilities?
A
25
B
1
C
3
D
22
9) You have 52 cards. You choose one and put it back. When you select the next card, how many choices do you have?
A
52
B
51
C
2
D
1
10) You have 52 cards. You choose one and keep it. When you select the next card, how many choices do you have?
A
1
B
2
C
52
D
51
*select an answer for all questions
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