PHI 110 EXAM 1 QUESTIONS WITH
100% CORRECT ANSWERS
My logic professor was born either in the 14th or 15th century. He wasn't born in the
15th century. So he must have been born in the 14th century - Answer- valid and
unsound
Steve's birthday is a week after Joe's. Joe's is April the 20th. Hence Steve's is the 27th -
Answer- valid
If Scott is a Baptist, then he is a Protestant. He is a Protestant. So he must be a Baptist
- Answer- invalid
Since Great Expectations was written by Shakespeare and Great Expectations was
originally written in Greek, it follows that Shakespeare wrote at least one work in Greek -
Answer- valid and unsound
If Abraham Lincoln was beheaded, then he died. Lincoln died. Therefore, Lincoln was
beheaded - Answer- invalid and unsound
Since the Korean War occurred before World War I and World War I occurred after the
American Civil War, it follows that the Korean War occurred before the American Civil
War - Answer- invalid and unsound
The United States Congress has more members than there are days in the year.
Therefore, at least two members of Congress have the same birthday - Answer- valid
and sound
Since Lincoln was an American and Lincoln was a famous statesman, we may conclude
that at least one American was a famous statesman - Answer- valid and sound
Atlanta is a city in Mexico and Mexico is a part of the United States; therefore, Atlanta is
a city in the United States - Answer- valid and unsound
The earth is bigger than the sun, and the moon is bigger than the earth. So the moon is
bigger than the sun - Answer- valid and unsound
The sun is bigger than the earth, and the sun is bigger than the moon. So the earth is
bigger than the moon - Answer- invalid and unsound
, Chicago is a city in Illinois and Illinois is part of the United States. Therefore Chicago is
a city in the United States - Answer- valid and sound
All Americans are fluent speakers of English. The Queen of England is an American.
Therefore the Queen of England is a fluent speakers of English - Answer- valid and
unsound
Three is larger than four, and four is larger than five. Therefore three is larger than five -
Answer- valid and unsound
If Stephen King wrote War and Peace, then Stephen King is a great novelist. Stephen
King did write War and Peace. Therefore Stephen King is a great novelist - Answer-
valid and unsound
If Tolstoy wrote Harry Potter, then Tolstoy is a great novelist. Tolstoy didn't write Harry
Potter. So Tolstoy is not a great novelist - Answer- invalid and unsound
Descartes claims that information derived from the senses is not certain because we
might be dreaming or being sent false images by some evil genius. - Answer- true
When Plato argues from the fact that the user is different from the thing used and that
we use our bodies, he is making an argument for dualism. - Answer- true
Zeno argues that motion is impossible because to cross any distance one must first
cross over an infinite number of halfway points—which is impossible. - Answer- true
Descartes is a skeptic. - Answer- false
For Plato, the relation of a carpenter to a hammer is analogous to the relation of the
soul to the body. - Answer- true
A necessary condition for being a lion is being an animal. - Answer- true
"All poodles are dogs. All dogs are animals. Therefore all poodles are animals." This
argument is an example of a deduction that is: - Answer- sound
"Nobody has ever proved that pornography doesn't increase incidents of rape and child
abuse. Thus, we can only conclude that pornography has a direct effect on the crime
rate." This argument is an example of the fallacy of: - Answer- appeal to ignorance
Author of The Euthyphro: - Answer- plato
A sufficient and necessary condition for being a widow is being a woman whose spouse
has died. - Answer- true
100% CORRECT ANSWERS
My logic professor was born either in the 14th or 15th century. He wasn't born in the
15th century. So he must have been born in the 14th century - Answer- valid and
unsound
Steve's birthday is a week after Joe's. Joe's is April the 20th. Hence Steve's is the 27th -
Answer- valid
If Scott is a Baptist, then he is a Protestant. He is a Protestant. So he must be a Baptist
- Answer- invalid
Since Great Expectations was written by Shakespeare and Great Expectations was
originally written in Greek, it follows that Shakespeare wrote at least one work in Greek -
Answer- valid and unsound
If Abraham Lincoln was beheaded, then he died. Lincoln died. Therefore, Lincoln was
beheaded - Answer- invalid and unsound
Since the Korean War occurred before World War I and World War I occurred after the
American Civil War, it follows that the Korean War occurred before the American Civil
War - Answer- invalid and unsound
The United States Congress has more members than there are days in the year.
Therefore, at least two members of Congress have the same birthday - Answer- valid
and sound
Since Lincoln was an American and Lincoln was a famous statesman, we may conclude
that at least one American was a famous statesman - Answer- valid and sound
Atlanta is a city in Mexico and Mexico is a part of the United States; therefore, Atlanta is
a city in the United States - Answer- valid and unsound
The earth is bigger than the sun, and the moon is bigger than the earth. So the moon is
bigger than the sun - Answer- valid and unsound
The sun is bigger than the earth, and the sun is bigger than the moon. So the earth is
bigger than the moon - Answer- invalid and unsound
, Chicago is a city in Illinois and Illinois is part of the United States. Therefore Chicago is
a city in the United States - Answer- valid and sound
All Americans are fluent speakers of English. The Queen of England is an American.
Therefore the Queen of England is a fluent speakers of English - Answer- valid and
unsound
Three is larger than four, and four is larger than five. Therefore three is larger than five -
Answer- valid and unsound
If Stephen King wrote War and Peace, then Stephen King is a great novelist. Stephen
King did write War and Peace. Therefore Stephen King is a great novelist - Answer-
valid and unsound
If Tolstoy wrote Harry Potter, then Tolstoy is a great novelist. Tolstoy didn't write Harry
Potter. So Tolstoy is not a great novelist - Answer- invalid and unsound
Descartes claims that information derived from the senses is not certain because we
might be dreaming or being sent false images by some evil genius. - Answer- true
When Plato argues from the fact that the user is different from the thing used and that
we use our bodies, he is making an argument for dualism. - Answer- true
Zeno argues that motion is impossible because to cross any distance one must first
cross over an infinite number of halfway points—which is impossible. - Answer- true
Descartes is a skeptic. - Answer- false
For Plato, the relation of a carpenter to a hammer is analogous to the relation of the
soul to the body. - Answer- true
A necessary condition for being a lion is being an animal. - Answer- true
"All poodles are dogs. All dogs are animals. Therefore all poodles are animals." This
argument is an example of a deduction that is: - Answer- sound
"Nobody has ever proved that pornography doesn't increase incidents of rape and child
abuse. Thus, we can only conclude that pornography has a direct effect on the crime
rate." This argument is an example of the fallacy of: - Answer- appeal to ignorance
Author of The Euthyphro: - Answer- plato
A sufficient and necessary condition for being a widow is being a woman whose spouse
has died. - Answer- true
