Reasoning is the one section where practice changes your score fastest, because the question types repeat even when the surface changes. Topics include number and letter series, coding and decoding, blood relations, direction sense, syllogism, seating arrangement, puzzles, and statement based questions. Solutions show the diagram or table used to reach the answer, which is the part worth copying into your own method.
Six persons A, B, C, D, E, F sit around a circular table. A sits between B and C. D sits opposite to B. E is to the left of A. Who sits opposite to A?
Answer: A
In circular arrangement: B-A-C order with A between B and C. D opposite B. E left of A means E-A-C arrangement. F must be opposite A.
Q.9Medium
Statement: All teachers are educators. Some educators are researchers. Conclusion: Some teachers are researchers.
Answer: B
From the given statements, we cannot conclude that some teachers are researchers as researchers may only come from non-teacher educators.
Q.10Medium
A man walks 8 km North, then 6 km East, then 4 km South. How far is he from the starting point?
Answer: D
Net displacement: 6 km East and 4 km North (8-4). Distance = √(6² + 4²) = √(36+16) = √52 = 2√13 km
Q.11Medium
If COMPUTER is coded as GSVNUCVS, what is the coding method?
Answer: B
C→G (shift -6), O→I (shift -6), etc. Each letter is shifted 6 positions backward in the alphabet.
Q.12Medium
Four friends A, B, C, D are standing in a row. B is to the right of A. C is to the right of D but to the left of B. D is to the left of A. What is the correct order?
Answer: A
D is leftmost. A is right of D. C is right of D but left of B. B is rightmost. Order: D-A-C-B
Q.13Medium
In a code, FLOWER is written as EKNVDQ. How is GARDEN written in the same code?
Answer: B
Each letter is shifted backward by 1. G→F, A→Z, R→Q, D→C, E→D, N→M = FZQDCM
Q.14Medium
X is the uncle of Y. Y is the sister of Z. Z is the father of W. How is W related to X?
Answer: A
X is uncle of Y. Y is sister of Z. So X is also uncle of Z. Z is father of W. Therefore, W is nephew of X.
Q.15Medium
Five boxes are arranged in order of weight. Box C is heavier than Box A. Box B is lighter than Box D. Box E is the heaviest. Box A is lighter than Box B. Which box is the lightest?
Answer: A
From A<B<D and A<C and E is heaviest. Testing: A<B, A<C, B<D, E heaviest. A is lightest.
Q.16Medium
Series: 1, 1, 2, 3, 5, 8, 13, ?
Answer: A
Fibonacci sequence where each number is sum of previous two. 8+13=21
Q.17Medium
A girl leaves home at 9 AM, walks North for 2 km, turns West for 3 km, turns South for 4 km. In which direction is she from home?
Answer: A
Net: 3 km West, 2 km South (4-2). She is Southwest of home.
Q.18Medium
Statement: All students are hardworking. No lazy person is hardworking. Conclusion: No student is lazy.
Answer: A
If all students are hardworking and no lazy person is hardworking, then logically no student can be lazy.
Q.19Medium
If TIGER is coded as 20-9-7-5-18, how is ZEBRA coded?
Answer: A
Letters coded by position in alphabet. Z=26, E=5, B=2, R=18, A=1. Answer is 26-5-2-18-1
Q.20Medium
Series: 3, 7, 15, 31, 63, ? What comes next?
Answer: A
Pattern: 2¹+1=3, 2³-1=7, 2⁴-1=15, 2⁵-1=31, 2⁶-1=63, 2⁷-1=127. Each is 2ⁿ-1 where n starts at 2
