Venn Diagrams - ISEE Lower Level (grades 5-6) Mathematics Achievement

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Question

If Jill likes blue, yellow, tan and green, and Doug likes red, tan, black and green, which Venn diagram is correct?

Answer

The middle portion of the diagram is the area that both circles share, so the color name that belongs in both circles should go in the middle area. Doug and Jill both like green and tan, so those colors should go in the middle. Only Jill likes blue and yellow, so these go on Jill's side. Only Doug likes red and black, so these go on Doug's side.

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Question

Students were asked if they prefer TV or radio. The following Venn Diagram depicts the number of students who said TV, radio, or both. How many students like both TV and radio?

Isee_question_8

Answer

The blue circle of the Venn diagram depicts the number of students who prefer TV, the orange circle depicts the number of students who prefer radio, and the region of overlap indicates the number of students who like both. Therefore, 7 students like both TV and radio.

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Question

Thirty people are surveyed concerning their color preference. Eighteen people like blue, twenty-one like pink, and six don't like either color. How many people like both colors?

Answer

Start by removing the number who don't like either from the total number of peole surveyed:

Using set notation we get:

, or the number of people who like both colors, , is equal to the number of people who like blue, , plus the number of people who like pink, , minus the number of people who like both blue and pink, .

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Question

Twenty-five students were surveyed concerning a classroom pet. Thirteen students wanted a lizard, fifteen wanted a frog, and five didnt want a pet at all. How many students wanted both a lizard and a frog?

Answer

Start by removing the number who don't like either from the total number of students surveyed:

Using set notation we get:

, or the number of people who like both pets, , is equal to the number of people who like frogs, , plus the number of people who like lizards, , minus the number of people who like both frogs and lizards, .

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Question

Fifty people were surveyed. Twenty-three people liked the baseball team from Chicago, thirty-five like the baseball team from St. Louis, and ten don't like either team. How many people like both teams?

Answer

Start by removing the number who don't like either team from the total number of people surveyed:

Using set notation we get:

, or the number of people who like both teams, , is equal to the number of people who like the Cubs, , plus the number of people who like the Cardinals, , minus the number of people who like both teams, .

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Question

Twenty-five students are surveyed. Twelve students like math, fifteen like science, and six don't like either subject. How many students like both math and science?

Answer

Start by removing the number who don't like either from the total number of students surveyed:

Using set notation we have:

, or the number of people who like both subjects, , is equal to the number of people who like math, , plus the number of people who like science, , minus the number of people who like both math and science .

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Question

Fifty people are surveyed at the zoo. Thirty-seven liked the Great Apes, twenty-two liked the Reptile House, and eleven didn't like either. How many people liked both the Great Apes and the Reptile House?

Answer

Start by removing the number who don't like either from the total number of people surveyed:

Using set notation we have:

, or the number of people who like both animals, , is equal to the number of people who like apes, , plus the number of people who like reptiles, , minus the number of people who like both apes and lizards, .

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Question

Use the following Venn Diagram to answer the question.

Venndiagram1

What hobbies to both Andy and Mary enjoy?

Answer

A Venn Diagram is made up of two circles. Each circle represents something, and the section where they intersect shows what those two circles have in common. So, in the Venn Diagram

Venndiagram1

we can see Andy's hobbies on the left and Mary's hobbies on the right. The section in the middle shows the hobbies Andy and Mary have in common.

So, to answer the question, what hobbies do Andy and Mary have in common, we can see that they both enjoy eating and singing.

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Question

Use the following Venn Diagram to answer the question.

Venndiagram1

What hobbies do Andy and Mary have in common?

Answer

Let's look at the Venn Diagram.

Venndiagram1

We can see the first circle contains Andy's hobbies, and the second circle contains Mary's hobbies. The place in the middle, where the 2 circles intersect, shows the hobbies that both Andy and Mary enjoy. Or the hobbies they have in common. You can see they are a part of each person's circle.

So, the hobbies that are in the middle are eating and singing. Therefore, the hobbies that Andy and Mary have in common are eating and singing.

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Question

Venn

Define universal set to be the set of integers from 1 to 20 inclusive.

Define sets as follows:

Which of the following would be the set of all elements that would go into the grayed region in the above Venn diagram?

Answer

The grayed region is the set of all elements that are in - that is, in both and . This set is

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Question

Venn

Define universal set to be the set of integers from 1 to 20 inclusive.

Define sets as follows:

Which of the following would be the set of all elements that would go into the grayed region in the above Venn diagram?

Answer

The grayed region is the set of all elements that are in - that is, in but not . This set is

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Question

The following Venn diagram depicts the number of students who like soccer, football, or both. How many students like soccer but not football?

Isee_question_6

Answer

A Venn diagram is used to demonstrate the number of people (or things) in particular categories. The regions of the circle that are overlapping indicate the number of individuals that belong to multiple groups. Therefore, based on this diagram, 12 students like soccer only, 16 like football only, and 8 like both.

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Question

Use the Venn Diagram to answer the question.

All of the sixth grade students at Park Middle School play at least one instrument.There are 60 total sixth graders at Park Middle School.

Venndiagram

How many students play both the drums and the guitar, but do not play the piano?

Answer

The shaded area where the circle that contains the word guitar overlaps with the circle that contains the word drums has the number 5. It is incorrect to add the total number of guitar players to the total number of drum players because we are only looking for students who play both instruments.

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Question

Use the Venn Diagram to answer the question.

All of the sixth grade students at Park Middle School play at least one instrument.There are 60 total sixth graders at Park Middle School. Venndiagram

Based on the information in the diagram, how many students play the guitar?

Answer

18 students play the guitar, but you must also add the 5 students who play the guitar and drums and the 3 students who play the guitar and piano.

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Question

Use the Venn Diagram to answer the question.

All of the sixth grade students at Park Middle School play at least one instrument.There are 60 total sixth graders at Park Middle School. Venndiagram

If one student plays all three instruments, how many students play both the drums and the piano, but not the guitar?

Answer

There are 60 total students. If 1 person plays all 3 instruments, then add that to all of the other numbers on the Venn Diagram to see that 58 students are represented on the Venn Diagram. Subtract that number from the total number of students to find the number of students in the missing category (those who play both the drums and the piano, but not the guitar).

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Question

The intersection point of a venn diagram represents the probability of niether event happening. True or false?

Answer

The intersection of a venn diagram represents when both events happen at the same time, not when neither happen.

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Question

Use the following Venn Diagram to answer the question.

Venndiagram1

What hobbies does Andy enjoy doing?

Answer

When looking at a Venn Diagram, we can see that it is made up of two circles. In this Venn Diagram

Venndiagram1

we can see Andy's hobbies on the left and Mary's hobbies on the right. We also see what hobbies they have in common in the center where the two circles intersect.

Now, when looking at Andy's circle containing his hobbies, we see that he enjoys sleeping, reading, and cooking. His circle is also part of the intersection, so we must include those hobbies as well. So, he also enjoys eating and singing.

So, overall, Andy's hobbies include sleeping, reading, cooking, eating, and singing.

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Question

The area when two circles on a Venn Diagram cross each other is when of the events occurs. True or False?

Answer

The point where two circles on a Venn Diagram intersect is the point where both of the events occur, not when neither occur.

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Question

Use the following Venn Diagram to answer the question.

Venndiagram1

What hobbies does Andy enjoy doing?

Answer

Venndiagram1

When looking at a Venn Diagram, we can see that it is made up of two circles. In this Venn Diagram we can see Andy's hobbies on the left and Mary's hobbies on the right. We also see what hobbies they have in common in the center where the two circles intersect.

Now, when looking at Andy's circle containing his hobbies, we see that he enjoys sleeping, reading, and cooking. His circle is also part of the intersection, so we must include those hobbies as well. So, he also enjoys eating and singing.

So, overall, Andy's hobbies include sleeping, reading, cooking, eating, and singing.

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