SSC CGL Tier I Mock Test – General Intelligence & Reasoning (25 Questions with Solutions)

Q1. If A is coded as 1, B as 2, and so on, what will be the code for the word SKY?

Answer: 55

Explanation: S=19, K=11, Y=25 → 19+11+25 = 55

Q2. In a certain code, TRAIN = UQZJM. How is STUDY written in that code?

Answer: TVWEX

Explanation: Pattern of +1, -1, +2, -2, +3 alternately.

Q3. Find the odd one out: Apple, Mango, Banana, Potato

Answer: Potato

Explanation: Apple, Mango, Banana are fruits; Potato is a vegetable.

Q4. 2, 6, 12, 20, 30, ?

Answer: 42

Explanation: Series is n(n+1): 1×2=2, 2×3=6, 3×4=12, etc.

Q5. Which number will replace the question mark? 4, 9, 19, 39, ?

Answer: 79

Explanation: Pattern: ×2+1 → 4×2+1=9, 9×2+1=19...

Q6. Pointing to a woman, a man said, "She is the wife of my mother's only son." How is the woman related to the man?

Answer: Wife

Explanation: Mother's only son = the man himself → the woman is his wife.

Q7. Which of the following is the odd one out? 2, 3, 5, 7, 9, 11

Answer: 9

Explanation: All are prime numbers except 9.

Q8. If CAT = 24, DOG = 26, then BAT = ?

Answer: 23

Explanation: Sum of alphabet positions: C(3)+A(1)+T(20)=24; same logic for BAT.

Q9. Complete the analogy: Book : Reading :: Pen : ?

Answer: Writing

Explanation: Book is for reading, pen is for writing.

Q10. Arrange the words in dictionary order: Mango, Apple, Banana, Grapes

Answer: Apple, Banana, Grapes, Mango

Explanation: Alphabetical order followed.

Q11. Which is the mirror image of PQRS?

Answer: SRQP

Explanation: Mirror reverses the order of letters.

Q12. A clock shows 3:15. What is the angle between the hour and minute hand?

Answer: 7.5°

Explanation: Formula: |(30H - (11/2)M)| → (30×3 - 5.5×15) = 7.5°

Q13. Which number will come next? 121, 144, 169, 196, ?

Answer: 225

Explanation: Series of perfect squares: 11², 12², 13², 14²...

Q14. If "North" is coded as "South", "East" as "West", then what will be the direction of sunrise?

Answer: West

Explanation: Sunrise is in East, coded as West.

Q15. Ravi is taller than Mohan but shorter than Sohan. Who is the tallest?

Answer: Sohan

Explanation: Sohan > Ravi > Mohan.

Q16. Which of the following doesn't belong to the group? Square, Rectangle, Circle, Triangle

Answer: Circle

Explanation: All others are polygons, circle is not.

Q17. If 7×6 = 47, 5×4 = 21, then 9×8 = ?

Answer: 73

Explanation: Logic: (a×b) + (a+b). Example: 7×6=42+5=47.

Q18. Find the missing term: AZ, BY, CX, ?

Answer: DW

Explanation: First letter increases A→B→C→D, second decreases Z→Y→X→W.

Q19. Which Venn diagram represents "Doctors, Males, Females"?

Answer: Three intersecting circles

Explanation: Doctors can be both males and females, so overlap.

Q20. If Delhi is coded as 73541 and Lucknow as 826739, then how is "INDIA" coded?

Answer: 34191

Explanation: Each letter is mapped to a digit as per given pattern.

Q21. Which number is different: 64, 125, 216, 343, 441

Answer: 441

Explanation: Others are perfect cubes, 441 is not.

Q22. Two statements: (i) Some teachers are doctors. (ii) All doctors are players. Conclusions: (a) Some players are teachers. (b) All teachers are players. Which is correct?

Answer: Only (a) follows

Explanation: Venn diagram confirms only (a).

Q23. Identify the odd one: 2-4, 3-9, 4-16, 5-30

Answer: 5-30

Explanation: All pairs follow a², but 5²=25, not 30.

Q24. If Monday was the 5th of the month, what will be the day on 26th of the same month?

Answer: Monday

Explanation: Difference = 21 days = 3 weeks → same day = Monday.

Q25. Which of the following is a mirror image of 3254?

Answer: 4523

Explanation: Mirror reverses order and orientation.