Which method used to preserves food by slowing down the

Statement:

All Pens are pencil.

Only Pencils are Laptop.

Only Pens are Mobile.

Only Pencils are Book.

Statement: 

Few Doors are not window.

All windows are table.

Only a few tables are chair.

Conclusion:

Statements:

Only a few Red are Green.

No Green is Yellow.

No Pink is Red.

Conclusions:

I. Some Red are not Yellow.

Statements: 

Only pens are pencil

Some pens are copy

Only copies are book

Conclusion:

Statement:

 Only a few Guava are Mango.   

All Mango are Avocado.   

Conclusion:   

Statements:

Only Footballs is Cricket

20% Footballs is Hockey

Only a few Hockey is Rugby.

Conclusion:

Statement :

No mobiles is a charger.

Some chargers are not phones.

No phone is a bell.

Conclusion :

Statements:

No number is a digit.

All digits are fractions.

Some fractions are integers.

Conclusions:

Statements:       Some wires are widths.

                               No width is a length.