CAT 1999 — DILR Question 9
Directions: Each question consists of five statements followed by options consisting of three statements put together in a specific order. Choose the option which indicates a valid argument, that is, where the third statement is a conclusion drawn from the preceding two statements.
Example:
A. All cigarettes are hazardous to health.
B. Brand X is a cigarette.
C. Brand X is hazardous to health.
Here, ABC is a valid option, where statement C can be concluded from statements A and B.
A. All Golmal islanders are blue-coloured people.
B. Some smart people are not blue-coloured people.
C. Some babies are blue-coloured.
D. Some babies are smart.
E. Some smart people are not Golmal islanders.
Answer & solution
- A
BCD
ABE
- C
CBD
- D
None of these
(b) ABE is the correct answer choice, as it forms a valid syllogism.
GI = Golmal islanders
BCP = Blue-coloured people
SP = Smart people
NBCP = Not blue-coloured people
Those smart people who are not blue-coloured people (shaded portion) are definitely not Golmal islanders.
(a) BCD is invalid, because there is no connection between some babies that are BCP and the some SP
who are not BCP.
(c) CBD is invalid, because there need not necessarily be any relationship between the some B that are BCP
and the some B that are SP.
