Age Comparison Logic Puzzle Explained
This question asks us to identify the youngest person among five individuals based on a set of relative age comparisons. We need to carefully analyze the given statements to establish the complete age order.
Analyzing the Age Relationships
Let's break down each piece of information provided:
- P is older than R. This means P's age is greater than R's age. We can represent this using an inequality: $P > R$.
- L is younger than M. This means L's age is less than M's age. Represented as: $L < M$ or $M > L$.
- R is older than Y. This means R's age is greater than Y's age. Represented as: $R > Y$.
- M is younger than Y. This means M's age is less than Y's age. Represented as: $M < Y$ or $Y > M$.
Establishing the Complete Age Order
Now, we combine these inequalities to find the overall age ranking:
- From $P > R$ and $R > Y$, we can deduce that P is older than R, and R is older than Y. This gives us the sequence: $P > R > Y$.
- We know $R > Y$ and also $Y > M$. Combining these extends the sequence: $P > R > Y > M$.
- Finally, we know $Y > M$ and $M > L$. Adding this to our sequence gives the complete order from oldest to youngest: $P > R > Y > M > L$.
Identifying the Youngest Person
Based on the combined age order $P > R > Y > M > L$, the person at the end of the sequence is the youngest.
Therefore, L is the youngest person among the five.
This corresponds to Option 1.
Important Questions from Ordering and Ranking (Notes)
- The sixth largest three-digit odd number among those with all digits distinct is
- A transformation experiment is performed with two Pneumococcal strains. One strain is resistant to four drugs - A, B, C, and D, whereas the other is sensitive to all the drugs. Both strains are mixed and the mixture is plated on media containing various combinations of the drugs. The colonies obtained on these plates are given below:
Drugs added No. of colonies Drugs added No. of colonies A 1156 CD 786 B 1148 ABC 30 C 1161 ABD 42 D 1139 ACD 630 AB 46 BCD 36 AC 640 ABCD 30 AD 942 BC 51
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Each of P, Q, R, S, T, U and V has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. Q has an exam on Thursday and U has an exam on Saturday. T has an exam immediately before S. P has an exam on one of the days after V. R has an exam immediately after S. How many people have exams between R and P?
- Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order. Only two boxes are kept below E. Only one box is kept above D. Only one box is kept between D and B. G is kept immediately above C. F is kept at some place below A. How many boxes are kept below A?
