What is the main useful function of a tooth brush?

• To brush the teeth

• To clean the teeth

• To remove plaque and food

• All are correct

What is the main useful function of a refrigerator?

• To store products

• To make ice

• To cool products

• All are correct

How many rules do we have in Trimming?

• 1

• 2

• 3

• 4

“The Function is not needed any more because the Object of the Function no longer exists” is the definition of

• Function Model

• Trimming Rule A

• Value Improvement

• Trimming Rule B

How many system parameters do we have in TRIZ?

• infinity

• 76

• 40

• 39

The following is example of a parameter

• Long

• Cool

• Big

• Speed

How many inventive Principles do we have in TRIZ?

• between 0 to 4

• 39

• 40

• 76

What is the size of the Contradiction Matrix?

• 39 x 40

• 40 x 40

• 40 x 39

• 39 x 39

Where is the position of Improving Parameters in the Contradiction Matrix?

• Left Side

• Right Side

• Bottom

• Middle

If a car is an Engineering System, which one is a Component of the Super-system?

• Wheel

• Engine

• Road

• All are correct