Example 1
Statement: a. All Chairs are Tables.
b. All Tables are Tools.
c. All Tools are Cupboard
Conclusion: I. All Chairs are Cupboard
II. Some Cupboard are Tables
III. Some Cupboard are Chairs
Explanation of 1st Conclusion
Step 1: All Chairs are Tables
All Tools are Cupboard
Apply the Cancellation method
Step 2: All Chairs are Cupboard
Explanation of 2nd Conclusion
Step 1: All Tables are Tools
Apply the Cancellation method
Some Cupboard are Table
So, the conclusion two follows
Explanation of 3rd Conclusion
Step 1: All Chairs are Tables
All Tools are Cupboard
Apply the Cancellation method
Some Cupboard are Chairs
So, the conclusion three follows
Example 2
Statement: a. NO Pen is Pencil.
b. All Pencil is Book.
c. Some Book is Eraser.
Conclusion: I. Some Eraser is Pencil.
II. No Pencil is Pen.
III. Some Book is not Pen.
Explanation of 1st Conclusion
Step 1: All Pencil is BookAs per rule
All + Some = No Conclusion
So, there is no conclusion between all and some. That is why conclusion 1 doesn't follow.
Explanation of 2nd Conclusion
Step 1: NO Pen is PencilSo, the conclusion two follows.
Explanation of 3rd Conclusion
Step 1: NO Pen is PencilStep 2: No + All = some not (reversed)
So, the conclusion three follows.
Example 3
Statement:
a. NO Computer is Pen drive.
b. All Laptops are Computer.
c. All Phones are Laptops.
Conclusion:
I. Some Phones are Computer.
II. No Laptops are Pen drive.
III. Some Laptops are not Phones.
Explanation of 1st Conclusion
Step 1: All Phones are Laptops.
Apply the cancellation method.
Step 2: All Phones are Computer
So, the conclusion one follows.
Explanation of 2nd Conclusion
Step 1: All Laptops are Computer.
Step 2: All + No = NO
So, the conclusion two follows.
Explanation of 3rd Conclusion
Step1: All Phones are Laptops.
Some Phones are Laptops
Step 2: Some Phones are Laptops
A possible conclusion of double statement.
Some Phones are Computer
So, the conclusion 3rd doesn't follow.
Example 4
Statement All Fans are Tub lights
All Tub lights are CFL
All CFL are LEDs
Conclusion I. All CFL being Fans is a possibility.
II. All Fans being a LEDs is a possibility
Explanation of 1st Conclusion
Step 1: All Fans are Tub lights
All Tub lights are CFL
Apply the cancellation method.
Step 2: All Fans are CFLs
All CFL being Fans is a possibility.
So, the conclusion 1st follow.
Explanation of 2nd Conclusion
Step 1: All Fans are Tub lights
All CFL are LEDs
Apply the cancellation method.
Step 2: All Fans are LEDs
Step 4: As per the rule of possibility conclusion of single statement
So, the conclusion 2nd follow.
Example 5
Statement Some Fruits are Vegetables
Some Vegetables are Cereals.
Conclusion I. Some Fruits are Cereals
II. Some Fruits being cereals is a possibility.
Explanation of 1st Conclusion
As per the rule of syllogism,Some + Some = No Conclusion
So, Conclusion one doesn’t follow.
Explanation of 2nd Conclusion
As per the rule of possibility,When there is no relationship found between the statements, there is always a possibility.
So, Conclusion to follow.
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