Law of Detachment and Syllogism Quizizz

Use the law of syllogism to draw a conclusion from the two given statements:
Statement 1: If you exercise regularly, then you have a healthy body
Statement 2: If you have a healthy body, then you have more energy

• You have more energy
• If you exercise regularly, then you have more energy
• You have a healthy body
• If you do not have a healthy body, then you do not exercise regularly

Which law of logic is this?

If I clean the bathroom, then I don't have to do the dishes.

I cleaned the bathroom.

Therefore, I don't have to do the dishes.

• Law of Detachment

• Law of Syllogism

• Law of Contrapositive

• None

Draw a conclusion from the statement.
If Jack goes to school, then it is Monday.
Jack doesn't go to school.

• Jack skipped school.
• It isn't Monday.
• It's Saturday.
• Invalid

Tags

CCSS.RI.9-10.1

CCSS.RL.8.1

CCSS.RL.9-10.1

CCSS.RL.11-12.1

CCSS.RI.8.1

Using the Law of Syllogism, which of the following completes the statement to form a valid conclusion?
If it is snowing heavily, then school will be canceled.
If school is canceled, the big test will not be given today.
It is snowing heavily, then...

• Look out for the snowplows while driving to school.
• The big test will not be given today.
• The roads will be hard to drive on.
• You should call the school to see if school is canceled.

p→q
q→r
∴p→r
Which law is modeled?

• Law of Syllogism
• Law of Detachment
• Law of Contrapositive
• Law of Shannon

p→q
p
∴q
Which law is modeled?

• Law of Syllogism
• Law of Detachment
• Law of Contrapositive
• Law of Shannon

Use Law of Syllogism to make a conclusion.
 If a number is divisible by 10, then it is divisible by 2.  If a number is divisible by 2, then it is even.

• If a number is divisible by 10, then it is even,
• If a number is even, then it is divisible by 10.
• If a number is divisible by 2, then it is even.
• If a number is even, then it is divisible by 2.

If it rains, then practice is cancelled that day.

Practice is cancelled on Thursday. What can you conclude?

• It rains on Thursday.

• The grass gets too wet on Thursday.

• No conclusion.

• The team lifts weights instead on Thursday.

Tags

CCSS.RI.9-10.1

CCSS.RL.8.1

CCSS.RL.9-10.1

CCSS.RI.11-12.2

CCSS.RL.11-12.1

If it rains, then practice is cancelled that day.

It rains on Thursday. What can you conclude?

• Practice is cancelled on Thursday.

• The grass gets too wet on Thursday.

• No conclusion.

• The team lifts weights instead on Thursday.

If it rains, then practice is cancelled that day.

It doesn't rain on Thursday. What can you conclude?

• Practice is not cancelled on Thursday.

• The grass isn't wet on Thursday.

• No conclusion.

• The team lifts weights on another day.

Tags

CCSS.RI.9-10.1

CCSS.RL.8.1

CCSS.RL.9-10.1

CCSS.RI.11-12.2

CCSS.RI.8.1