Brain Teasers
Bike-Mania
Fun: (2.21)
Difficulty: (2.16)
Puzzle ID: #19080
Submitted By: lesternoronha1 Corrected By: MarcM1098
Submitted By: lesternoronha1 Corrected By: MarcM1098
A motorcycle workshop owner had dismantled some motorcycles, so as to get three varieties of brakes - B1, B2 and B3, four varieties of Engines - SL, SK, EZ and RX, and three varieties of tires - MRF, BS and MCN. It was further known that B1 cannot be with SL or SK. EZ must be with B3. MRF must be with SL and vice versa. MCN or BS cannot be with SK. If B2 brakes are to be fitted, then which of the following must also be used?
1) SK engine and MCN tyres.
2) MCN tyres and SK engine or RX engine.
3) SL engine and MRF tyres.
4) None of these.
1) SK engine and MCN tyres.
2) MCN tyres and SK engine or RX engine.
3) SL engine and MRF tyres.
4) None of these.
Answer
If B2 brakes are to be fitted, statement 3 i.e., SL engine and MRF tires must also be used.The given choices to be used along with B2 brakes are
1) SK engine and MCN tires.
2) MCN tires and SK engine or RX engine.
3) SL engine and MRF tires.
4) None of these.
The given observations are
A) B1 cannot be with SL or SK.
B) EZ must be with B3.
C) MRF must be with SL and vice versa.
D) MCN or BS cannot be with SK.
From observation A, brake B1 must be with engines EZ or RX (since it cannot be with SL or SK). But from observation B, engine EZ must be with B3. Hence brake B1 must be with RX.
Thus B2 must be with either engine SL or engine SK. If engine SK is selected, we cannot use either of tires MCN or BS from observation D. MRF tires cannot be used with SK engine because MRF must be with SL and vice versa from observation C.
Therefore if brake B2 is used, engine SL along with tires MRF must be used.
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Comments
As far as I can see, there is no logical reason why B2 brakes cannot be used with RX engines as well, with either BS or MCN tires. In which case, it doesn't have to be B2/SL/MRF, and the answer is none of the above.
The answer can't be none of the above when one of the above will do.
Gizzer is correct in that "there is no logical reason why B2 brakes cannot be used with RX engines as well,"
You never said being able to use one engine type with one brake type exludes that engine type from being used with other brake types.
I thought the answer was 2 or 3.
Gizzer probably said 4 because you said which combo MUST be used with B2's and he was thinking that not ane One of the above MUST be used. Which is correct, however it is not correct that none of the above must be used.
Overall, the puzzle was ok, but very poorly worded.
You never said being able to use one engine type with one brake type exludes that engine type from being used with other brake types.
I thought the answer was 2 or 3.
Gizzer probably said 4 because you said which combo MUST be used with B2's and he was thinking that not ane One of the above MUST be used. Which is correct, however it is not correct that none of the above must be used.
Overall, the puzzle was ok, but very poorly worded.
Im glad all I have to do is ride them not fix them! but good teaser
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