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In each of the following questions, two ...

In each of the following questions, two statements are given followed by two/four conclusions I, II, III and IV. You have to consider the two statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements :
(a) No mobile is a watch.
(b) All watches are calculators.
Conclusions :
I. No calculator is a mobile.
II. Some calculators are mobiles. 

A

Neither Conclusion I nor II follows

B

Only Conclusion I follows.

C

Only Conclusion II follows.

D

Either Conclusion I or II follows.

Text Solution

Verified by Experts

The correct Answer is:
D
(i) All pens are papers `rarr`  Universal Affirmative (A-type).
(ii) Some houses are lakes `rarr` Particular Affirmative (I-type).
  (iii) No eraser is paper `rarr` Universal Negative (E-type). 
(iv) Some erasers are not papers `rarr` Particular Negative (O-type).

`E+A rArr O_(1)`,-type of Conclusion.
"Some calculators are not mobiles".
Conclusions I and II form Complementary Pair, Therefore, either Conclusion I or Conclusion II follows.
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