If the student will perform exactly two experiments and after the first experiment exactly one of the resulting three...
LidaSeptember 9, 2019
How is answer 3 - 1 incorrect?
Hi,
I understand the correct answer, but I am confused on to eliminate answer 1 and 3.
3+1= B leaving 4O (one orange after first mix).
second mix would be 2+4= G
The question says which mix it would be possible to end up with 1O after FIRST mixture.
Please explain.
Thank you,
Lida
Replies
Create a free account to read and
take part in forum discussions.
Thank you for your question. The question asks which flasks could the student use for experiment #2. We know that experiment 1 resulted in an orange liquid, meaning the student mixed the contents of flasks 2+3. The result of the first experiment is one orange flask - either 2 or 3, and one empty flask -either 2 or 3. The rules tell us that the product of an experiment cannot be used in further experiments, and an empty flask cannot be used in an experiment since any experiment requires mixing TWO chemicals, hence we can conclude that neither flask 2 nor flask 3 can be used in the second experiment. Therefore, any answer containing either of flasks 2 or 3 would be incorrect.
Please let me know if you have any further questions.
September 4, 2020
@Irina,
The video explanation of this question concludes that E is the correct answer choice. Could you please clarify?
Jenna-ClaybornJanuary 19, 2021
@Irina
I there a reason why you assumed that the first experiment was a mixture of flasks 2 and three? According to the rules, that would force the first experiment to result in two orange liquids, but the question says we're left with EXACTLY ONE. The hard copy of the Logic Games book also lists E as the correct answer. so what went on here?
Jenna-ClaybornJanuary 19, 2021
Woops I think I got a bit confused here. Disregard!
bhakim94April 2, 2021
but the correct answer was E which contains flask 3. very confusing
bhakim94April 2, 2021
@Irina
RynJanuary 13, 2022
Jenna, you were right. The correct answer actually does have a 3 in it.
jakennedyJanuary 18, 2022
@Ryn,
Hey everyone,
In this one, we start with:
Red - 2. Blue - 3. Green - 4. Orange
We know that after the first mix, we have exactly one flask containing the color orange. This could be done in one of two ways:
1. By keeping the orange in flask 4 and NOT creating a new orange
2. By mixing the orange from flask 4 but creating a new orange
The second option cannot ever work because if we mix flask four with flask 1 or flask 2 we get green, and if we mix flask 4 with flask 3 we get blue. This would leave us with no orange at all.
Therefore, we know that we have to leave flask 4 alone and then make sure to not create a new orange with the remaining flasks. If we mixed flask 2 and flask 3, we would create a second orange. Thus, we have to mix flasks 1 and 2 or flasks 1 and 3.
They also told us that the product of one experiment cannot be used in a future experiment. Since we proved that flask 1 has to be used, we cannot select any answer choice that contains flask 1. For this reason, A, B, and C are out.
Since the first mix was with either flasks 1 and 2 or flasks 1 and 3, we also cannot select answer choice D, because one of either flask 2 or 3 was already used.
Answer choice E works, because if the first mixture was between flasks 1 and 2, then the second mixture can be between flasks 3 and 4.
So you are all correct in that the correct answer choice is E.
