CAT 2018 Slot 1 — DILR Question 31
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Passage / Data
Answer the following question based on the information given below.
Fuel contamination levels at each of 20 petrol pumps P1, P2, …, P20 were recorded as either high, medium, or low.
- Contamination levels at three pumps among P1 – P5 were recorded as high.
- P6 was the only pump among P1 – P10 where the contamination level was recorded as low.
- P7 and P8 were the only two consecutively numbered pumps where the same levels of contamination were recorded.
- High contamination levels were not recorded at any of the pumps P16 – P20.
- The number of pumps where high contamination levels were recorded was twice the number of pumps where low contamination levels were recorded.
If the contamination level at P11 was recorded as low, then which of the following MUST be true?
Answer & solution
- A
The contamination level at P18 was recorded as low.
- B
The contamination level at P12 was recorded as high.
The contamination level at P14 was recorded as medium.
- D
The contamination level at P15 was recorded as medium.
Solution
If the contamination level at P11 was recorded as low, then case 1 is the only valid case. Statement of option [3] is the only true statement.
Hence, option (c).