Q1. Find the missing number, following the same rule in each group: (3, 5, 64); (6, 10, 256); (2, 2, ?)
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Answer: C. 16
Rule: third = (first + second)². 2, 2 → 16.
SSC CGL General Intelligence & Reasoning Beginner Practice Set 9
25 beginner questions. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Missing Number, Analogy, Dictionary Order, Number Series, Number Ranking, Alphabet Series, Ranking and Order, Classification, Coding-Decoding, Alphabet Test, Clock, Direction Sense, Calendar
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Q2. Find the missing term: 6 : 42 :: 16 : ?
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Answer: D. 272
Rule: n(n + 1). 16 × 17 = 272.
Q3. If the following words are arranged in dictionary order, which word comes 1st? Plasma, Plastic, Plaster, Plane
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Answer: C. Plane
Dictionary order: Plane, Plasma, Plaster, Plastic. The 1st word is Plane.
Q4. Find the wrong number in the series: 64, 81, 100, 121, 144, 171, 196
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Answer: D. 171
Rule: squares of 8 to 14. The term should be 169, not 171.
Q5. Find the next number in the series: 20, 33, 46, 59, 72, ?
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Answer: B. 85
Each term increases by 13: 72 + 13 = 85.
Q6. How many numbers from 1 to 500 are divisible by 2 or 5?
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Answer: A. 300
⌊500/2⌋ + ⌊500/5⌋ − ⌊500/10⌋ = 250 + 100 − 50 = 300.
Q7. Find the wrong number in the series: 2, 8, 14, 20, 26, 34, 38
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Answer: C. 34
Rule: add 6. The term should be 32, not 34.
Q8. Find the next letter in the series: A, B, C, D, ?
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Answer: D. E
Each letter moves 1 place forward: D + 1 = E.
Q9. In a row of 50 people, Divya is 25th from the left and Kunal is 19th from the right. How many people are there between them?
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Answer: A. 6
Between = 50 − (25 + 19) = 6.
Q10. Find the odd pair: 3:7, 4:9, 6:14, 8:17
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Answer: C. 6:14
In each pair except 6:14, the second number is 2 × first + 1.
Q11. In a certain code, TABLE is written as UBCMF. How is SCHOOL written in that code?
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Answer: A. TDIPPM
Each letter moves 1 place forward. So SCHOOL → TDIPPM.
Q12. If the letters of the word 'BLANKET' are arranged in alphabetical order, which letter will be 2nd from the left?
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Answer: B. B
Alphabetical order: ABEKLNT. The 2nd letter is B.
Q13. Find the missing term: WAT : XBU :: STO : ?
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Answer: B. TUP
Each letter moves 1 place forward: STO → TUP.
Q14. If the letters of the word 'TEACHER' are arranged in alphabetical order, which letter will be 5th from the left?
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Answer: C. H
Alphabetical order: ACEEHRT. The 5th letter is H.
Q15. How many numbers from 1 to 550 are divisible by both 8 and 2?
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Answer: D. 68
LCM(8, 2) = 8; ⌊550/8⌋ = 68.
Q16. Find the odd one out: 13, 61, 83, 87
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Answer: B. 87
All except 87 are prime numbers; 87 is composite.
Q17. If the digits of the number 64519 are arranged in ascending order, what is the sum of the 1st and 5th digits from the left?
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Answer: D. 10
Ascending: 14569. 1 + 9 = 10.
Q18. A clock shows 8:30. What time will its mirror image show?
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Answer: A. 3:30
11:60 − 8:30 = 3:30.
Q19. Arjun walks 3 km towards South, then turns left and walks 4 km. How far is Arjun from the starting point?
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Answer: B. 5 km
Distance = √(3² + 4²) = √25 = 5 km.
Q20. Find the missing term: 4 : 20 :: 22 : ?
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Answer: C. 506
Rule: n(n + 1). 22 × 23 = 506.
Q21. If the digits of the number 45971 are arranged in ascending order, what is the sum of the 4th and 5th digits from the left?
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Answer: B. 16
Ascending: 14579. 7 + 9 = 16.
Q22. In a row of students, Asha is 26th from the left and 11th from the right. How many students are there in the row?
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Answer: B. 36
Total = 26 + 11 − 1 = 36.
Q23. Find the odd pair: 2:4, 3:9, 4:16, 11:122
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Answer: A. 11:122
In each pair except 11:122, the second number is the square of the first.
Q24. In a row of 46 people, Ajay is 12th from the left and Asha is 20th from the right. How many people are there between them?
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Answer: D. 14
Between = 46 − (12 + 20) = 14.
Q25. If today is Thursday, what day of the week will it be after 37 days?
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Answer: B. Saturday
37 ÷ 7 leaves remainder 2. Thursday + 2 days = Saturday.