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Question

Consider the following information and answer the following questions based on it.

Five different boxes of blue, green, black, red and white are placed in an irregular order from left to right such that -

1. The black box is not on the end edges.

2. The white box is second from the right end.

3. There are two boxes between the red and black boxes and one box between the blue and red boxes.

Which of the following statements is true?

A. The black box is second from the left.

B. The white box is second from the left.

C. The green box is third from the left.

D. The white box is third from the right.

The correct answer is

A

Solving the Colored Box Arrangement Logic Puzzle

This question requires us to determine the specific order of five colored boxes (blue, green, black, red, and white) arranged from left to right based on the given clues. We need to use logical deduction to find the final arrangement and then evaluate the given statements.

Step-by-Step Deduction Process

Let's denote the positions from left to right as P1, P2, P3, P4, and P5.

  • We have five boxes: Blue (Bu), Green (G), Black (B), Red (R), White (W).

Now, let's analyze the clues one by one:

  • Clue 2: The white box is second from the right end.
    • The right end is P5. Second from the right is P4.
    • So, the White box is at position P4.
    • Current arrangement: \_ \_ \_ W \_
  • Clue 1: The black box is not on the end edges.
    • The end edges are P1 (left end) and P5 (right end).
    • So, the Black box cannot be at P1 or P5. Black must be at P2, P3, or P4.
    • However, P4 is already occupied by White.
    • So, Black must be at P2 or P3.
    • Current state: \_ \_ \_ W \_ (Black cannot be P1 or P5)
  • Clue 3: There are two boxes between the red and black boxes and one box between the blue and red boxes.
    • Let's use the relative positions. If Red is at position 'i', Black is at position 'i+3' or 'i-3'. If Red is at position 'i', Blue is at position 'i+2' or 'i-2'.
    • We know White is at P4. Black is at P2 or P3.
    • Let's test the possible positions for Black (P2 or P3):
    • Case 1: Black is at P2.
      • Arrangement: \_ B \_ W \_
      • Now, place Red. There are two boxes between Red and Black (P2). Red must be at P2+3=P5 or P2-3=P-1 (impossible).
      • So, Red must be at P5.
      • Arrangement: \_ B \_ W R
      • Let's check Clue 1 again: Black is at P2, which is not an end. This is fine.
      • Now, place Blue. There is one box between Blue and Red (P5). Blue must be at P5+2=P7 (impossible) or P5-2=P3.
      • So, Blue must be at P3.
      • Arrangement: \_ B Bu W R
      • The positions filled are P2(B), P3(Bu), P4(W), P5(R). The only remaining box is Green, and the only remaining position is P1.
      • Final proposed arrangement: G B Bu W R
    • Let's verify this arrangement (G B Bu W R) against all clues:
      • Clue 1: Black (B) is at P2. Not on an end. True.
      • Clue 2: White (W) is at P4. Second from the right. True.
      • Clue 3: Two boxes between Red (R at P5) and Black (B at P2). The positions between P2 and P5 are P3 and P4 (Blue and White). Yes, there are two boxes. True.
      • Clue 3: One box between Blue (Bu at P3) and Red (R at P5). The position between P3 and P5 is P4 (White). Yes, there is one box. True.
    • All clues are satisfied by the arrangement G B Bu W R.
    • Let's consider the other possibility for Black's position just in case:
    • Case 2: Black is at P3.
      • Arrangement: \_ \_ B W \_
      • Place Red (two boxes from B at P3). Red at P3+3=P6 (impossible) or P3-3=P0 (impossible). This case doesn't allow placing Red based on the distance. So Black cannot be at P3.

Therefore, the only valid arrangement based on the clues is: Green, Black, Blue, White, Red from left to right (P1 to P5).

Position P1 (Left) P2 P3 P4 P5 (Right)
Box Color Green Black Blue White Red

Evaluating the Statements

Now, let's check which of the given statements is true based on our final arrangement (G B Bu W R):

  • A. The black box is second from the left.
    • Black is at P2. The second position from the left is P2. This statement is True.
  • B. The white box is second from the left.
    • White is at P4. The second position from the left is P2. This statement is False.
  • C. The green box is third from the left.
    • Green is at P1. The third position from the left is P3. This statement is False.
  • D. The white box is third from the right.
    • The positions from the right are P5 (1st), P4 (2nd), P3 (3rd), P2 (4th), P1 (5th).
    • White is at P4, which is second from the right. This statement is False.

Based on our analysis, only statement A is true.

Revision Table: Box Arrangement Puzzle

Clue Deduction Impact on Arrangement
Black not on ends (P1, P5) B is at P2 or P3 Limits Black's possible spots
White is second from right (P4) W is at P4 Fixes White's position
2 boxes between R & B Relative distance between R and B (e.g., R at i, B at i±3) Constrains R's position based on B's
1 box between Bu & R Relative distance between Bu and R (e.g., Bu at i, R at i±2) Constrains Bu's position based on R's
Combined Clues & W at P4, B at P2 or P3 Leads to B at P2, R at P5, Bu at P3 Determines positions for Black, Red, Blue
Remaining Box and Position Green at P1 Completes the arrangement

Additional Information: Solving Arrangement Puzzles

Arrangement puzzles, also known as linear or spatial reasoning puzzles, involve arranging items based on a set of clues that describe their relative positions. Here are some tips for solving them effectively:

  • Visualize: Draw a diagram or use placeholders (like slots for positions) to represent the arrangement.
  • Start with the most definitive clues: Clues that fix an item's position (like "second from the right") are often the easiest starting points.
  • Use relative clues to find possible locations: Clues like "between" or "to the left/right of" help narrow down options once some items are placed.
  • Look for connections: Clues often link items. If Clue A links X and Y, and Clue B links Y and Z, you can deduce the relationship between X, Y, and Z.
  • Test possibilities systematically: If a clue leaves a few options open for an item, try each possibility one by one and see if it fits with other clues. Eliminate possibilities that lead to contradictions.
  • Keep track of placed items: Mark items and positions as they are determined to avoid confusion.
  • Verify the final arrangement: Once you have a potential solution, read through all the original clues one last time and check if the arrangement satisfies every single one. This helps catch errors.
  • Pay attention to wording: "Between X and Y" means X and Y are on either side, but not necessarily immediately next to the items in between. "Immediately to the left" is more specific. "End edges" refers to the first and last positions.

Practicing different types of arrangement puzzles helps improve your logical deduction and spatial reasoning skills.

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Important Questions from Box Puzzle

  1. J, K L, M, N and O are six teachers. Each one teaches a different subject out of Hindi, English, Math, Science, Social Science and Arts, NOT necessarily in the same order. Each of them teaches on only one day, from Monday to Saturday, NOT necessarily in the same order. J teaches Arts on Saturday. L teaches neither English nor Social Science, but he teaches on Thursday. Wednesday is reserved for Maths taught by K. O teaches Science a day before N. Social Science is taught a day before Arts.

    Which subject is taught on the day between Thursday and Saturday?

  2. Five chairs C1, C2, C3, C4 and C5 are placed one above the other. If C1 is above C2, C3 is above C4 but below C5 and C4 is above C1, which chair is in the middle ?
  3. J, K, L, M, N and O are six teachers. Each one teaches a different subject out of Hindi, English, Math, Science, Social Science and Arts, not necessarily in the same order. Each of them teaches on only one day, from Monday to Saturday, not necessarily in the same order. J teaches Arts on Saturday. L teaches neither English nor Social Science, but he teaches on Thursday. Wednesday is reserved for Maths taught by K. O teaches Science a day before N. Social Science is taught a day before Arts. Which subject is taught by L?

  4. J, K L, M, N and are six teachers. Each one teaches a different subject out of Hindi, English, Math, Science, Social Science and Arts, not necessarily in the same order. Each of them teaches on only one day, from Monday to Saturday not necessarily in the same order. J teaches Science on Wednesday. O teaches Math second after J. K teaches on the first day of the week, but teaches neither Hindi nor English. M teaches English before N and L teaches Arts before J. Which subject is taught on Saturday?

  5. Which box is the first from the left?

    A. Red

    B. White

    C. Blue

    D. Green
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