DEDUCTIVE REASONING

What does deductive reasoning use to form its arguments?

• patterns

• observed examples

• specific cases

• facts, definitions, accepted properties, and laws of logic

What can you conclude from the given true statements?

If an animal is a dog, then they like biscuits.

Sammy is a dog.

• Sammy is a Great Dane

• Sammy likes biscuits.

• Sammy is really a cat.

• We can't conclude anything.

What can you conclude from the given true statements?

If you live in Orlando, then you live in Florida.

You live in Orlando.

• You don't live in Florida.

• You hate snow.

• You live in Florida.

• We can't conclude anything.

What can you conclude from the given true statements?

If I study for one hour each day, then I will score well on the exam.

I score well on the exam.

• I studied for one hour each day.

• I studied a lot.

• I didn't study.

• We can't conclude anything.

What can you conclude from the given true statements?

All trees are living things.

Narra is a tree.

• Narra is a living thing

• Narra is not a living thing.

• Living things are Narra

• We can't conclude anything.

What can you conclude from the given true statements?

Every child needs love and attention.

Jose is a child.

• Jose does not need love and attention.

• Jose needs love and attention.

• Jose is not a child anymore.

• We can't conclude anything.

What can you conclude from the given true statements?

No human can fly.

I am a human.

• I can fly.

• I cannot fly.

• I am not a human.

• We can't conclude anything.

Using the statements:

If it is Friday, then I will get paid.

It is Friday.

What is the conclusion?

• It is not Friday

• I will not get paid

• It is Friday

• I will get paid

If the school cafeteria sells pizza today, Ryujin is going to eat four pieces. Pizza is on sale for school lunch today.

Using deductive reasoning, what statement can you make based on this information?

• Lots of people will buy pizza.

• The school cafeteria sells pizza.

• Ryujin will eat four pieces of pizza.

• Ryujin needs to go on a diet.

All snaked are cold-blooded. A cobra is a snake.

Using deductive reasoning, what statement can you make based on this information?

• Cold-blooded animals are snake.

• A cobra is cold-blooded.

• Cold-blooded animals are cobra.

• We can't conclude anything.