Which is the converse of:
"If a figure is a circle with radius r, then its circumference in 2(pi)r."

• If a figure has a circumference of 2(pi)r, then its a circle with radius r.
• If a figure doesn't have a circumference, then it's a circle with a radius of r.
• If a figure isn't a circle with radius r, then its circumference isn't 2(pi)r
• If a figure isn't a circle, then it doesn't have a circumference.

Contrapositive of:
If an integer ends with 0, then it's divisible by 2.

• If an integer ends with 2 then it's divisible by 0.
• If an integer doesn't end in 0, then it's not divisible by 2.
• If an integer isn't divisible by 2, then it's doesn't end in 0.
• If an integer is divisible by 2, then it ends with 0.

Which statement is a good definition of a rectangle?

• A rectangle is a shape with four sides.
• A rectangle is a shape with two pairs of parallel sides.
• A rectangle is a quadrilateral with four congruent angles.
• A rectangle is a parallelogram with four congruent sides.

Determine whether this sentence is a statement or not. If yes, determine its truth value.

"Perak is located in Malaysia."

• Not a statement.

• Statement. False.

• Statement. True.

p : x is even number.

q : x can be divided by 2.

What is the implication for the statements above?

• If x is even number, then x can be divided by 2.

• If x can be divided by 2, then x is even number.

• If x cannot be divided by 2, then x is not even number.

• If x is not even number, then x cannot be divided by 2.

What is a conjecture?

• A statement believed to be true based on observations.
• An example which disproves an hypothesis.
• the performance of tricks that are seemingly magical

__________________________ uses specific observations and patterns of behavior to make generalizations.

• Deductive reasoning

• Inductive reasoning

Inductive or Deductive?

All observed houses on South Street have roofs that are falling apart. Sherry lives on South Street. Her roof is falling apart.

• Inductive Reasoning

• Deductve Reasoning

Inductive or Deductive?

Snakes are reptiles and reptiles are cold blooded; therefore, snakes are cold blooded.

• Inductive Reasoning

• Deductive Reasoning

Inductive or Deductive?

A scientist dips a platinum wire into a solution containing salt, passes the wire over a flame, and observes that it produces an orange-yellow flame. She does this with many other solutions that contain salt, finding that they all produce an orange-yellow flame. She states "A solution that contains salt produces a orange-yellow flame in a flame test".

• Inductive Reasoning

• Deductive Reasoning