Logical Problems Questions and Answers

Exercise


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Q 1

Fact 1: Pictures can tell a story.

Fact 2: All storybooks have pictures.

Fact 3: Some storybooks have words.

If the first three statements are facts, which of the following statements must also be a fact?

I: Pictures can tell a story better than words can.

II: The stories in storybooks are very simple.

III: Some storybooks have both words and pictures.


A)   I only

B)   II only

C)   II only

D)   None of the statements is a known fact.


Correct Option - C

ExplanationStatements I and II are not supported by the facts. Statement III is true because if all story-books have pictures and only some have words, then some storybooks have both words and pictures.

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Q 2

Fact 1: All dogs like to run.

Fact 2: Some dogs like to swim.

Fact 3: Some dogs look like their masters.

If the first three statements are facts, which of the following statements must also be a fact?

I: All dogs who like to swim look like their masters.

II: Dogs who like to swim also like to run.

III: Dogs who like to run do not look like their masters.


A)   I only

B)   II only

C)   II and III only

D)   None of the statements is a known fact.


Correct Option - B

ExplanationStatement II is the only true statement. Since all dogs like to run, then the ones who like to swim also like to run. There is no support for statement I or statement III.

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Q 3

Fact 1: All chickens are birds.

Fact 2: Some chickens are hens.

Fact 3: Female birds lay eggs.

If the first three statements are facts, which of the following statements must also be a fact?

I: All birds lay eggs.

II: Some Hens are birds.

III: Some chickens are not hens.


A)   I only

B)   II only

C)   II and III only

D)   None of the statements is a known fact.


Correct Option - C

ExplanationThe first statement cannot be true because only female birds lay eggs. Statement II is true because some hens are chickens and all chickens are birds. Statement III is also true because if only some chickens are hens, then some must not be hens.

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Q 4
Four people witnessed a mugging. Each gave a different description of the mugger. Which description is probably right?

A) He was average height, thin, and middle-aged.

B) He was tall, thin, and middle-aged.

C) He was tall, thin, and young.

D) He was tall, of average weight, and middle-aged.


Correct Option - B

ExplanationTall, thin, and middle-aged are the elements of the description repeated most often and are therefore the most likely to be accurate.

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Q 5
Four friends in the sixth grade were sharing a pizza. They decided that the oldest friend would get the extra piece. Randy is two months older than Greg, who is three months younger than Ned. Kent is one month older than Greg. Who should get the extra piece of pizza?

A)   Randy

B)   Greg

C)   Ned

D)   Kent


Correct Option - C

ExplanationIf Randy is two months older than Greg, then Ned is three months older than Greg and one month older than Randy. Kent is younger than both Randy and Ned. Ned is the oldest.

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Q 6
A four-person crew from Classic Colors is painting Mr. Field's house. Michael is painting the front of the house. Ross is in the alley behind the house painting the back. Jed is painting the window frames on the north side, Shawn is on the south. If Michael switches places with Jed, and Jed then switches places with Shawn, where is Shawn?

A) in the alley behind the house

B) on the north side of the house

C) in front of the house

D) on the south side of the house


Correct Option - C

ExplanationAfter all the switches were made, Shawn is in front of the house. Ross is in the alley behind the house,Michael is on the north side, and Jed is on the south.

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Q 7
Four defensive football players are chasing the opposing wide receiver, who has the ball. Calvin is directly behind the ball carrier. Jenkins and Burton are side by side behind Calvin. Zeller is behind Jenkins and Burton. Calvin tries for the tackle but misses and falls. Burton trips. Which defensive player tackles the receiver?

A)   Burton

B)   Zeller

C)   Jenkins

D)   Calvin


Correct Option - C

ExplanationAfter all the switching was done, Jenkins was directly behind the receiver. Calvin and Burton had fallen. Zeller remained in the rear.

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