Page 236 - Services Selection Board (SSB) Interviews

232 Syllogism
12. (b) All furniture are jungles + No jungle is road = No conclusion Hence II and consequently I do not
A + E = E = No furniture is road → conversion → follow.
No road is furniture (E) Hence I does not follows. 16. (a) Some mirrors are pens + No pen is paper = I +
All furniture are jungles (A) → conversion → Some E = O* = Some mirrors are not papers Hence III
jungles are furniture (I). Hence II follows. No jungle does not follow. All buildings are mirrors + Some
is road + Some roads are hills = E + I = O* = mirrors are pens = A + I = No conclusion Hence II
Some hills are not jungles Hence III does not follows. and consequently I do not follow.
13. (c) Some stones are rocks + All rocks are mountains 17. (d) Some books are trees + All trees are roads = I +
= I + A = I = Some stones are mountains → A = I = Some books are roads (I) Hence II follows.
conversion → Some mountains are stones (I). Hence Some books are trees + All roads are wheels = I +
II follows. All brick are stones + Some stones are A = I = Some books are wheels → conversion →
mountains = A + I = No conclusion Hence II does Some wheels are books (I) Hence I follows. All trees
not follow. All brick are stones (A) → conversion → are roads + All roads are wheels = A + A = A = All
Some stones are bricks(I). Hence III follows. trees are wheels → conversion → Some wheels are
14. (c) Some plates are chairs + All chairs are tables = trees (I) Hence III follows.
I + A = I = Some plates are tables → conversion 18. (c) All stones are rivers + All rivers are cars = A +
→ Some tables are plates(I). Hence I follows. A = A = All stones are cars → conversion → Some
Some bags are plates + Some plates are chairs cars are stones (I) Hence II follows. All rivers are cars
= I + I = No conclusion Hence II and III do not + Some cars are trains = I + A = No conclusion
follow. By combination. However, the two form a Hence II and consequently I do not follow.
complementary E-I pair, Hence either I or III follows. 19. (e) Some rivers are hills + No hill is taxi = I + E
15. (d) Some rooms are halls + All halls are leaves = = O = Some rivers are not taxis Hence II does
I + A = I = Some rooms are leaves → conversion not follow. Again, since O- type statements can’t
→ Some leaves are rooms(I) Hence III follows. All be combined, neither I nor III follows. But the two
desks are rooms + Some rooms are halls = A + I = form a complementary E-I pair, Hence either I or III
follows.

Concept Deviator

1. (d) All teachers are lawyers (A) → conversion → + A = I = Some beaches are hotels Hence III follows.
Some lawyers are teachers (I). Hence IV follows. Now, All shores are beaches + Some beaches are
Now, Some doctors are lawyers + Some lawyers are hotels = A + I = No conclusion Hence I does not
teachers = I + I = No conclusion Hence I does not follow. All shores are beaches (A) → conversion →
follow. Some engineers are lawyers (I) → conversion Some beaches are shores (I). Hence II does not
→ Some lawyers are engineers + All engineers follow. All sands are beaches + Some beaches are
are businessmen = I + A = I = Some lawyers are trees = A + I = No conclusion Hence IV does not
businessmen → conversion Some businessmen follow.
are lawyers Hence II follows. But, All teachers are 4. (c) Some sparrows are crows + Some crows are
lawyers + Some lawyers are businessmen = A + I pigeons = I + I = No conclusion Hence III does
= No conclusion Hence III does not follow. not follow. Some crows are pigeons (I) → conversion
2. (a) All sponges are clothes + All clothes are liquids → Some pigeons are crows (I) Now, All parrots are
= A + A = All sponges are liquids → conversion pigeons + Some pigeons are crows = A + I =
→ Some liquids are sponges (I). Hence I does not No conclusion Hence II does not follow. Nor does
follows. All plastics are glasses + conversion of IV follow. However, conversion II form an I-E
Some sponges are glasses = A + I = No conclusion complementary pair with IV, Hence either I or IV
Hence II does not follow. All plastics are glasses follows. Some sparrows are crows (I) → conversion
(A) → conversion → Some glasses are plastics (I) → Some crows are sparrows + All sparrows are koels
Hence III does not follow. All clothes are liquids(A) → conversion → Some koels are crows (I). Hence I.
conversion Some liquids are clothes (I) Hence IV 5. (b) Some cushions are trolleys + All trolleys are lamps
does not follow. = I + A = I = Some cushions are lamps Hence III
3. (e) Some beaches are trees + All trees are hotels = I follows. All chairs are tables + All tables are cushions