NIELIT 2016 MAR Scientist D: 7

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The question is based on the information provided below:

Eight fighter pilots flying over a conflict region notice some hostile activity taking place in a village. To peaceably resolve the conflict, they land their planes and decide that it would be best to send those pilots who would best complement each other as negotiators to talk to the warring parties. The pilots $\text{A, B, C, D, E, F, G,}$ and $\text{H}$ are chosen as negotiators according to the following conditions:

1. $\text{A}$ is chosen if $\text{B}$ is chosen.
2. If $\text{G}$ is not chosen, then $\text{A}$ and $\text{F}$ are chosen.
3. $\text{B}$ and $\text{H}$ are chosen if $\text{A}$ is chosen
4. If $\text{F}$ is not chosen, then $\text{G}$ is chosen
5. If $\text{H}$ is not chosen, then $\text{E}$ is chosen.
6. If $\text{C}$ is not chosen, then $\text{D}$ is not chosen, and if $\text{D}$ is not chosen , then $\text{C}$ is not chosen.

Who could be sent to negotiate alone?

1. $\text{G}$
2. $\text{A}$
3. $\text{C}$
4. None of the above

retagged

Option D. None of the above

We can re-write the conditions as

$B \rightarrow A$

$G_{not} \rightarrow A, F$

$A \rightarrow B, H$

$F_{not} \rightarrow G$

$H_{not} \rightarrow E$

$C_{not} \rightarrow D_{not}$ & $D_{not} \rightarrow C_{not}$

For pilot A we also need to send B and H

pilot C and D will always be together.

With G also we need to send H or E.

3.1k points 2 9 66
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0
H or E can be sent to negotiate alone but that is not in the Options.
2
No, condition 5 says that either H or E must be sent. That means G cannot be sent alone.
0
Yes, You are right.

1
Minimum 2 people need to go.

AF, GH, GE are the minimal ones.
0
I am not able to understand how H, E, and G are related?

Explanation:

This game introduces the idea of reciprocal causation. For example, the constraint that says “If A, then B, and if B, then A” should be transcribed in one of the following two ways, based on the configurations of the other variables in the diagram:

You will run into reciprocal causation in the final constraint of this logic game. Here are the final diagrams that you should create:

Notice how the reciprocal causation constraints are diagrammed. Be aware of the implications of these constraints. For instance, if $B$ is not sent (diagram B), then $A$ cannot be sent and $G$ must be sent. In diagram A, if $B$ is sent, then $A$ and $H$ are sent.

Who could be sent to negotiate alone?

(A) If $H$ is not sent, $E$ must be sent, which means that $G$ cannot be sent alone.

(B) If $A$ is sent, $B$ must also be sent.

(C) If $C$ is sent, $D$ must also be sent.

618 points 1 9

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