Discussions
akash

· started a discussion

· 1 Months ago

ans is not cleare

Question:
DIRECTIONS: In each of the questions below are given few statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance from the commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements: 

All twenty are thirty. 

All thirty are forty.

All forty are sixty.

All sixty are seventy.


Conclusions: 

I. Some forty are thirty. 

II. Some seventy are sixty.

III. No thirty is twenty.

Options:
A) Only I and II follow  
B) Only II and III follow
C) Only I and III follow 
D) All I, II and III follow 
E) None of these 
Solution:

Ans: (a) 


Knowledge Expert

· commented

· 1 Months ago

Statements:
All twenty are thirty.
All thirty are forty.
All forty are sixty.
All sixty are seventy.

Conclusions:
I. Some forty are thirty.(follows because of surety)
II. Some seventy are sixty.(follows because of surety)
III. No thirty is twenty.(It can not follow because All twenty are thirty.)

Hence, Only I and II follow .............

for more click on report to see the ven-diagram which is given in the solution.

All Rights Reserved Top Rankers