11.5b Probability In Counting

11.5b Probability In Counting

9th Grade

16 Qs

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11.5b Probability In Counting

11.5b Probability In Counting

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

CCSS
HSS.CP.B.9

Standards-aligned

Created by

David Ho

Used 3+ times

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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A small pond contains five catfish and four bluegill. If five fish are caught at random, what is the probability that all of them are catfish?

1/90

1/126

1/210

1/56

Tags

CCSS.HSS.CP.B.9

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A car dealership has ten cars in the lot. Unfortunately, the keys to the cars have been mixed up. The manager randomly grabs a key and tries to start a car. A salesman also randomly picks a different key and tries to start another car. What is the probability that both cars start?

1/84

1/66

1/1716

1/90

Tags

CCSS.HSS.CP.B.9

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A gardener has nine identical-looking tulip bulbs, of which four will produce yellow tulips and five will become pink. He randomly selects and plants four of them and then gives the rest away. When the flowers start to bloom, what is the probability that exactly two of them are yellow?

175/429

175/396

10/21

100/231

Tags

CCSS.HSS.CP.B.9

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A shipment of eleven smartphones contains seven with cracked screens. If sold in a random order, what is the probability that exactly five of the first seven sold have cracked screens?

35/143

21/55

C) 189/572

D) 100/231

Tags

CCSS.HSS.CP.B.9

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A technician is launching fireworks near the end of a show. Of the remaining fourteen fireworks, seven are blue and seven are red. If she launches eight of them in a random order, what is the probability that exactly five of them are blue ones?

35/143 ≈ 24.476%

882/2431 ≈ 36.281%

35/66 ≈ 37.879%

105/286 ≈ 36.713%

Tags

CCSS.HSS.CP.B.9

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A politician is about to give a campaign speech and is holding a stack of thirteen cue cards, of which the first 3 are the most important. Just before the speech, he drops all of the cards and picks them up in a random order. What is the probability that cards #1, #2, and #3 are still in order on the top of the stack?

1/1716 ≈ 0.058%

1/1287 ≈ 0.078%

1/1001 ≈ 0.1%

1/30 ≈ 3.333%

Tags

CCSS.HSS.CP.B.9

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You are dealt five cards from a standard and shuffled deck of playing cards. Note that a standard deck has 52 cards and four of those are kings. What is the probability that you'll have exactly three kings in your hand?

10/21 ≈ 47.619%

94/54145 ≈ 0.174%

490/1287 ≈ 38.073%

441/1144 ≈ 38.549%

Tags

CCSS.HSS.CP.B.9

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