A conference organizer must choose exactly 3 discussants to respond to

Question

A conference organizer must choose exactly 3 discussants to respond to a paper to be presented by an invited speaker. The three discussants must be selected from seven volunteers, of whom four - Ito, Kemble, Lopez, and Miller- are known to be friendly to the speaker's theoretical point of view. The other three - Shapiro, Thompson and Ullman are known to be hostile to the speaker's theoretical point of view. In selecting the three discussants, the conference organizer must observe the following restrictions:

At least one friendly discussant and at least one hostile discussant must be selected.
 
 If Ito is selected, Thompson cannot be selected.
 
 If either Lopez or Miller is selected, the other must also be selected. Miller seated behind Lopez.
 
 If either Kemble or Ullman is selected, the other must also be selected, Kemble seated behind Ullman.

If Shapiro is selected and seated at the front-most seat as  1^{st}  Discussant, then who can be selected as the remaining members? Make only two selections, one in each column.

Apt0810 · Answer

So here Only choice to select is Ullman and Kemble,in which Ulman will be 2nd discussant and Kemble will be the 3rd discussant

Posted from my mobile device

MDUsman · Answer

Why Lopez and Miller are not selected ?

Sajjad1994 · Answer

They could be selected according to the rules given but we have only Lopez in the options provided, while rules says if either one is selected other must be selected so we have only one in the option and therefore we have to go to other option.

mSKR · Answer

Friends:I, K, L and M 
Hostile: S, T, U

- i/k/l/m and s/t/u
- I  s or u
- L+M ( M behind L)
- K+U (K behind U)

For 2nd : 
Thomsan: S T (i/k/l/m)- no definite answer
Ullaman: S U ( K needs to be 3rd ) SUK-valid
Lopez: S L( L needs to be second)  SML valid
K: correct answer with K in 3rd place ; not at 2nd place
Ito: S I ( no definite answer)

S U K – right answer

bM22 · Answer

Given Info: 
Friendly speakers : Ito, Kemble, Lopez, and Miller
Hostile Speakers : Shapiro, Thompson and Ullman

Conditions:
1. at least 1 friendly and one hostile.
2. If Ito, then no Thompson
3. If Lopez then Miller, and vice-versa.
4. If Kemble then Ullman, and vice-versa.

Now given : Shapiro is already a 1st seat speaker.
Then the 2 combinations for the 2nd 3rd would be:
Lopez, Miller,
Ullman, Kemble.

Ito wont be selected, because if we select Ito, Ullman, has to be selected => Kemble has to be selected, which would violate the given ask.
Thus the answer:

2nd Seat: Ullman
3rd Seat: Kemble.

yashikaaggarwal · Answer

The three discussants must be selected 
=>>> Friendly four - Ito, Kemble, Lopez, and Miller
=>>> Hostile three - Shapiro, Thompson and Ullman

The following restrictions are given:

1) =>>>> At least one friendly discussant and at least one hostile discussant must be selected.  (That means combination will be either FHH or FFH)

2) =>>> If Ito is selected, Thompson cannot be selected.
 { if I is(selected) T(not) }

3) =>>>>If either Lopez or Miller is selected, the other must also be selected. Miller seated behind Lopez. {if L selected M will }

4) =>>>>If either Kemble or Ullman is selected, the other must also be selected, Kemble seated behind Ullman.  {If K(friendly) selected U(hostile) will}(U sits ahead of K

If Shapiro is selected and seated at the front-most seat as 1st Discussant, then who can be selected as the remaining members? 
S is Hostile, 
(Other two can be either both friendly Or One friendly one Hostile)
We have 5 options.
1) T(Hostile),
2) U(hostile),
3) L(friendly),
4) K(friendly),
5) I(friendly).

L can't be selected because we need M to pair with L. (L out) (3rd condition)

I could be the choice, but It can't be paired with T(2nd condition), U has to be pair with K so I can't be with U and K either.L Is already out of scope. (I out)

T can be the option, but I won't be there(2nd condition), U and K has to be together, rules out to be pair with T and L's pair is M (T out)

Remaining are U and K (possible combination), also given in 4th condition U sits ahead of K.
 So 2nd discussant will be U and,
3rd discussant will be K

Posted from my mobile device

KelvinKiptoo10 · Answer

Is there an easy way to solve this type of question because it always drives me crazy

Posted from my mobile device

Pixelpot · Answer

They can be anoption, but cant be selected as Miller is not an option in the answer.

A conference organizer must choose exactly 3 discussants to respond to

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards

\(2^{nd}\) Discussant	\(3^{rd}\) Discussant
		Thompson
		Ullman
		Lopez
		Kemble
		Ito

GMAT Two-part Analysis (TPA) Questions

A conference organizer must choose exactly 3 discussants to respond to

Prep Toolkit

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards