Suppose a Facebook-crazed friend you know makes the claim: "Every student who is registered in Network this year has a Facebook account". You want to verity whether this claim is true or false.
(A) You already have four friends about whom you know one piece of information (regarding either whether they are registered in Network or whether they have a Facebook account). For each of these four, could you decide about the claim if you were to ask them for the other piece of information, and what would you decide?
i. David is registered in network
ii. Jessica is not registered in network
iii. Kim has a facebook account
iv. Ethan does not have a facebook account
(B) Suppose there are 130 students registered in network. What do you need to do to verify that this claim is true, or establish that the claim is false?
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