Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order.

No box is kept above F. Only three boxes are kept between F and B. Only one box is kept between G and D. D is kept immediately above B. Only four boxes are kept between G and C. A is kept in some place above E.

How many boxes are kept below D?

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NTPC Graduate Tier 1

2025 • 06 May, 2025 • Shift-1

Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order.

No box is kept above F. Only three boxes are kept between F and B. Only one box is kept between G and D. D is kept immediately above B. Only four boxes are kept between G and C. A is kept in some place above E.

How many boxes are kept below D?

Correct Answer

Top Position: 'No box is kept above F' means F is at position 1 (top).Locating B and D: Three boxes are between F and B, so B is at position 5. D is immediately......

💡 Analysis & Explanation

Top Position ▼

'No box is kept above F' means F is at position 1 (top).

Locating B and D ▼

Three boxes are between F and B, so B is at position 5. D is immediately above B, so D is at position 4.

Locating G and C ▼

One box is between G and D. G could be at 2 or 6. If G is at 2, four boxes between G and C places C at 7. If G were at 6, C would be at 1 (occupied by F), so G is at 2, and C is at 7.

Remaining Boxes ▼

Positions 3 and 6 are empty. A is above E, so A is at 3, and E is at 6. Order: F, G, A, D, B, E, C.

Conclusion ▼

Below D (position 4), there are exactly 3 boxes (B, E, and C).

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