This is of type 1:- "If X then Y and Z"
This statement implies that:
(i) (X ? Y and Z)
(ii) (~ Y or/and ~ Z ? ~ X) given in option B
As, 73 + 82 = 14
? (7 - 3) + (8 + 2) = 14
? 4 + 10 = 14
? 14 = 14 and 91 + 21 = 11
? (9 - 1) + (2 + 1) = 11
? 8 + 3 = 11 ? 11 = 11
Similarly, 86 + 24 = (8 - 6) + (2 + 4) = 2 + 6 = 8
Two
Cow ? Grass ? Milk ? Curd ? Butter
I is an insensible action. But II will be helpful in preventing such accidents.
The immediate course of action for the invigilator is that he must immediately confiscate the mobile phones and ask the students to leave the exam hall immediately.
All courses of action logically follow. First of all, the water of ponds should be treated to identify the nature of the virus. Since the problem is being faced, so the catching of then shrimps from the ponds should be temporarily stopped. Also, the fisherman should be asked to watch for the onset of such phenomenon in nature.
NA
I will help in cure while II will help in prevention.
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