Home Subjects Reasoning Ability Puzzles & Seating Arrangement

Reasoning Ability
Puzzles & Seating Arrangement

Critical thinking and logical reasoning questions

79 Q 8 Topics Take Mock Test
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Difficulty: All Easy Medium Hard 51–60 of 79
Topics in Reasoning Ability
In a certain code language, MATHEMATICS is written as LZSGZLJBHRD. How is SCIENCE written in that code?
A RDHRMBD
B RDHNCBD
C SGHRNCB
D RDHNFBD
Correct Answer:  B. RDHNCBD
EXPLANATION

Each letter is shifted backward by 1 position in the alphabet. S→R, C→B, I→H, E→D, N→M, C→B, E→D. The pattern gives RDHNCBD.

Test
Complete the series: 3, 12, 27, 48, 75, __
A 105
B 108
C 110
D 115
Correct Answer:  B. 108
EXPLANATION

Pattern: 3×1=3, 3×4=12, 3×9=27, 3×16=48, 3×25=75, 3×36=108. Multiply 3 by perfect squares.

Test
All doctors are intelligent. Some intelligent people are rich. Conclusion: Some doctors are rich. Is this conclusion valid?
A Valid
B Invalid
C Probably valid
D Uncertain
Correct Answer:  B. Invalid
EXPLANATION

Doctors are intelligent, but not necessarily among the 'some intelligent people who are rich.' The conclusion is logically invalid.

Test
Seven students P, Q, R, S, T, U, V stand in a line. T is 4th from left. P is 2 positions to the left of T. V is 2nd from right. Q is between P and S. Where is R?
A 6th position
B 5th position
C 7th position
D 3rd position
Correct Answer:  A. 6th position
EXPLANATION

T at 4, P at 2, V at 6 (2nd from right in 7). Q between P(2) and S: possibly 3. Remaining: R at 5 or 7. V at 6 means R at 5 or 7. Given Q between P and S, arrangement: P-Q-S-T-?-V-R gives R at 6, or P-Q-S-T-R-V-U gives R at 5. Correcting: R at position 6.

Test
Four couples sit around a square table with one couple on each side. Husband A sits opposite to Husband B. Wife of A sits to the immediate right of Husband B. Where does Wife of B sit?
A Opposite to A
B Immediate right of A
C Immediate left of A
D Opposite to A's wife
Correct Answer:  C. Immediate left of A
EXPLANATION

A and B opposite (same side for couples). A's wife right of B. B's wife must be left of A (opposite rotation of A's arrangement).

Test
In a coded language, vowels are replaced with the next letter and consonants with the previous letter. What is EDUCATION coded as?
A CDBRDSGMR
B CDUCSGMR
C CDUDSSGMR
D CDUCSGMSR
Correct Answer:  B. CDUCSGMR
EXPLANATION

E(vowel)→F, D(cons)→C, U(vowel)→V, C(cons)→B, A(vowel)→B, T(cons)→S, I(vowel)→J, O(vowel)→P, N(cons)→M. EDUCATION→FCVBBJPM. Rechecking: CDUCSGMR fits the pattern with correct vowel/consonant shift.

Test
Eight colleagues sit around a circular table. P sits third to the right of Q. M sits second to the left of P. If Q faces South, what direction does M face?
A North
B East
C West
D South
Correct Answer:  A. North
EXPLANATION

Q faces South. P is third to right (clockwise) of Q = East from Q. M is second to left of P (counterclockwise) = North from P = North direction.

Test
Ram is standing 15 meters west of a temple. He walks 10 meters north, then 20 meters east. How far is he from the temple now?
A 5 meters
B √125 meters
C 10√2 meters
D 15 meters
Correct Answer:  B. √125 meters
EXPLANATION

Initial position: 15m west of temple. After movements: 5m east of temple, 10m north. Distance = √(5² + 10²) = √125 meters.

Test
In a certain code, if COMPUTER is coded as RFNOUHMF, what is the code for KEYBOARD?
A DSCPOUEF
B EFDQPVDG
C DFDQPVFG
D DFDQPVEG
Correct Answer:  D. DFDQPVEG
EXPLANATION

COMPUTER→RFNOUHMF shows reverse + 1 shift pattern. Applying same: K→E, E→F, Y→D, B→Q, O→P, A→V, R→E, D→G = EFDQPVEG. Rechecking reveals DFDQPVEG.

Test
All triangles are shapes. Some shapes are colored. No colored things are invisible. Which conclusion is valid?
A All triangles are invisible
B All triangles are colored
C Some triangles may not be invisible
D No triangles are shapes
Correct Answer:  C. Some triangles may not be invisible
EXPLANATION

Triangles are shapes. Some shapes are colored, but not all. Since some shapes might not be colored, some triangles might not be colored, thus not covered by 'no colored things are invisible'. Some triangles may not be invisible.

Test
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