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
Company Secretary
A
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.
It is the case of "Either X or Y" hence (~ X ? Y) and (~ Y ? X) hence option (C) is correct.
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.
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