It is the case of "Either X or Y" hence (~ X ? Y) and (~ Y ? X) hence option (C) is correct.
The given statement is: Whenever I go in sun I feel headache. Here let us assume that X is "I go in sun" and Y is "I have headache"
Then situation is "Whenever X then Y" and implications in this is (X ? Y) and (~ Y ? ? X), now lets check options one by one
Option (a) I went in sun so I have headache now. (X ? Y) its right conclusion.
Option (b) I didn't go in sun so I don't have headache now.(~ X ? Y) it can not be concluded
Option (c) I m feeling headache that means I went in sun. (Y ? X), it can not be concluded.
Let X the event that Rajesh studies for the exam. and Y the event that Rajesh passes the exam. We have been given the information that X ? Y.
Thus ~ Y ~X. means if Ram failed the exam, he did not study for it.
Both the immediate neighbour of H are males
A is the son of H and H is daughter of D. So A is grandson of D.
A
The conclusion can be: The teacher gives break means Students are exhausted (as given in i and iv) Students are not exhausted hence teacher will not give a break (as given in ii and iii)
This is the case of either X or Y the conclusion should be:
CAT is not tough (means Easy) then IIT JEE is Easy [as given in ii and iii)
IIT JEE is tough then CAT is tough [ as given in iv and i]
This is the case of "unless X, Y" so in this case negation of one statement will be followed by other statement.
correct combination is (i) and (iii) and also (iv) and (ii)
The correct conclusion should be:
Susmit is sad that means he met with his girlfriend[ii and iii]
Susmit didn't meet his girlfriend so he must be happy [iv and i]
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