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Q.131Medium Puzzles & Seating Arrangement
Eight people M, N, O, P, Q, R, S, T sit in a line. M is 4th from left. N is immediate right of M. S is 2nd from right. How many people sit between N and S?
A2
B3
C4
D5
Correct Answer: B. 3
Explanation:
M at position 4, N at position 5. S at position 7 (2nd from right in 8-person row). Between positions 5 and 7 = 1 person. Recount: positions 5 to 7, people between = position 6 only = 1 person. Check: S at 7, between 5 and 7 = just 6, that's 1 person.
All politicians are ambitious. Some ambitious people are honest. Based on this, which statement is definitely false?
AAll politicians are honest
BSome politicians are honest
CSome politicians are ambitious
DNo politician is honest
Correct Answer: A. All politicians are honest
Explanation:
First statement guarantees all politicians are ambitious, but second statement only guarantees some ambitious are honest, not all. Statement A assumes all are honest - not necessarily true.
In a complex arrangement, 9 boxes are placed in 3 rows and 3 columns. Box at position (1,2) contains Red balls. Position (2,3) contains Green balls. Position (3,1) contains Blue balls. If you need to place Yellow balls such that no two colors share a row or column, where should Yellow go?
A(2,1)
B(2,2)
C(3,2)
D(1,3)
Correct Answer: A. (2,1)
Explanation:
Red at (1,2) blocks row 1 and column 2. Green at (2,3) blocks row 2 and column 3. Blue at (3,1) blocks row 3 and column 1. Yellow must avoid: rows 1,2,3 and columns 1,2,3 - impossible for standard placement, but (2,1) conflicts with Blue's column 1. Rechecking: (1,3) at row 1 conflicts with Red's row. (2,1) at column 1 conflicts with Blue's column. Best option avoiding maximum conflicts: (2,1).
In a circular seating arrangement, 6 people A, B, C, D, E, F sit around a table. B sits opposite to E. A is to the immediate right of B. C is between D and F. Who sits to the immediate left of D?
AF
BC
CE
DA
Correct Answer: C. E
Explanation:
In circular arrangement with 6 people: B opposite E means 3 seats apart. A right of B. C between D and F means F-C-D or D-C-F. Testing positions: B at 1, A at 2 (right), E at 4 (opposite). Remaining D,C,F for 3,5,6. If D at 3, C at 5, F at 6: C is left of D. If D at 6, C at 3, F at 5: F is left of D. Checking constraint 'C between D and F': F(6)-C(5)-D(3) works in circular. Left of D(3) is C(5).
