Deductions
✓ and ✕ method
Further Statements
✓ ✕
(+) All A’s are B’s (All) Some A’s are B’s
Some B’s are A’s
✕ ✕
(+) Some A’s are B’s (Some) Some B’s are A’s
✓ ✓
(-) No A’s are B’s (No) No B’s are A’s
Some A’s are not B’s
Some B’s are not A’s
✕ ✓
(-) Some A’s are not B’s (are not) No further deductions
(+) denotes a positive statement and (-) denotes a negative statement.
Rules
1) In the question, there will be two statements and 3 items.
2) If both statements start with some, we do not get a result.
Some + Some = No Result
3) If both statements start with no, we don’t get a result.
4) The middle term should have at least one tick mark.
5) If one of the statements is negative, the answer will also be negative.
6) The following combinations won’t give a result
No + No = No Result
Some + Some = No Result
Are not + No = No Result
Are not + Are not = No Result
7) The two items in the answer will retain their symbols as in given equation.
Eg: ✓ ✕
All Cats are
✓ ✓
No are Bats
✓ ✓
Ans: No Cats are Bats
Further statements of the deduction can be:
No Bats are Cats.
Some Cats are not Bats.
Some Bats are not Cats.
No comments:
Post a Comment