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Question

Seven boxes E, F, G, H, S, T and U are kept one over the other but not necessarily in the same order. Only three boxes are kept above G. Only one box is kept between E and G. Only three boxes are kept between E and U. U is kept at some place above G. T is kept immediately below U. S is kept at one of the places above F. H is not kept immediately above or below E.
Which box is kept at the lowermost position?

The correct answer is
F

To solve this problem, we need to arrange the seven boxes E, F, G, H, S, T, and U based on the given clues. Let's analyze the clues step by step:

  1. Only three boxes are kept above G.
    • This means G is in the 4th position from the top since 3 boxes are above it. Let's represent them as follows: \(--- \, --- \, --- \, G \, --- \, --- \, ---\)
  2. Only one box is kept between E and G.
    • Thus, E can be at either 2nd or 6th position because these are one position away from the 4th position based on G's position.
  3. Only three boxes are kept between E and U. U is kept at some place above G.
    • To satisfy this, if E is in the 2nd position, then U can be in the 6th position.
      If E is in the 6th position, U would be in the 2nd position. But as U should be kept above G, we finalize E in the 2nd position and U in the 6th position.
  4. T is kept immediately below U.
    • Given U is in the 6th position, T has to be in the 7th position.
  5. S is kept at one of the places above F.
    • Since S is above F and U takes the 6th and T takes the 7th, F has to be the lowermost, i.e., the 7th position is already taken, so F must be in the 5th position. S must then be one of the top three.
  6. H is not kept immediately above or below E.
    • Since E is in the 2nd position, H cannot be in the 1st or 3rd positions. Thus, H must be in the 1st position as it fits the only remaining valid position after S.

Based on the above deductions, the final position for each box is as follows:

PositionBox
1H
2E
3S
4G
5F
6U
7T

Therefore, the box kept at the lowermost position is F.

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Important Questions from Ordering and Ranking (Notes)

  1. The sixth largest three-digit odd number among those with all digits distinct is
  2. 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

    Based on the above results, which one of the below options represents the most likely order of the drug-resistance genes?
  3. There are five boys P, Q, R, S and T sitting in a row facing North such that P is right of Q and T is left of R and right of P. Q is right of S. Which boy is in the middle of the row?
  4. Five students P, Q, R, S and T scored different marks in an examination. Q scored more marks than at least two students. T scored less marks than S but more than R. S scored less marks than P. Q did not score the highest marks.
    Which of the following statements is/are correct ?
    Statements :
    I. Q holds second position.
    II. Q holds third position.
    III. Q holds fourth position.
  5. Rakesh is 17th from the right and Ankit is 15th from the left in a line of students. If they interchange their places, the position of Ankit becomes 19th from the left. How many students are there in the line ?
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