Q1. Find the next number in the series: 61, 67, 71, 73, 79, ?
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Answer: B. 83
These are consecutive prime numbers. Next = 83.
SSC CGL General Intelligence & Reasoning Advanced Practice Set 7
25 advanced questions, suggested time 30 minutes. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Number Series, Number Ranking, Missing Number, Analogy, Alphabet Series, Alphabet Test, Coding-Decoding, Clock, Classification, Direction Sense, Blood Relations
Score: 0 / 0
Q2. How many numbers from 1 to 700 are divisible by 4 or 7?
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Answer: C. 250
⌊700/4⌋ + ⌊700/7⌋ − ⌊700/28⌋ = 175 + 100 − 25 = 250.
Q3. Find the next number in the series: 15, 29, 43, 57, 71, ?
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Answer: D. 85
Each term increases by 14: 71 + 14 = 85.
Q4. Find the wrong number in the series: 13, 23, 35, 43, 53, 63, 73
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Answer: C. 35
Rule: add 10. The term should be 33, not 35.
Q5. Find the wrong number in the series: 14, 21, 30, 38, 46, 54, 62
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Answer: B. 21
Rule: add 8. The term should be 22, not 21.
Q6. Find the missing number in the series: 2, 37, 6, 33, 10, ?
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Answer: B. 29
Two alternating series: 2, 6, 10 (+4) and 37, 33, 29 (−4).
Q7. Find the missing number, following the same rule in each group: (4, 6, 100); (11, 12, 529); (2, 9, ?)
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Answer: C. 121
Rule: third = (first + second)². 2, 9 → 121.
Q8. Find the missing term: 23 : 528 :: 9 : ?
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Answer: B. 80
Rule: n² − 1. 9² − 1 = 80.
Q9. Find the next term: DF, IK, NP, ?
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Answer: B. SU
Each pair's letters are 2 apart, and each new pair starts 5 letters after the previous one: SU.
Q10. How many numbers from 1 to 750 are divisible by 8 or 2?
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Answer: D. 375
⌊750/8⌋ + ⌊750/2⌋ − ⌊750/8⌋ = 93 + 375 − 93 = 375.
Q11. If the letters of the word 'FESTIVAL' are arranged in alphabetical order, which letter will be 4th from the left?
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Answer: D. I
Alphabetical order: AEFILSTV. The 4th letter is I.
Q12. In a certain code, FLOWER is written as 158. How is PENCIL written in that code?
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Answer: B. 118
Code = 2 × (sum of letter positions). FLOWER: 2 × 79 = 158. PENCIL: 2 × 59 = 118.
Q13. A clock shows 2:35. What time will its mirror image show?
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Answer: C. 9:25
11:60 − 2:35 = 9:25.
Q14. A clock shows 8:50. What time will its mirror image show?
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Answer: C. 3:10
11:60 − 8:50 = 3:10.
Q15. Find the missing term: 3 : 28 :: 9 : ?
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Answer: A. 730
Rule: n³ + 1. 9³ + 1 = 730.
Q16. How many pairs of letters are there in the word 'KEYBOARD' which have as many letters between them in the word as in the English alphabet (counting both forward and backward)?
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Answer: B. 3
The pairs are: KO, KD, EA. Total = 3.
Q17. Find the missing number, following the same rule in each group: (2, 2, 4); (12, 3, 36); (11, 5, ?)
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Answer: A. 55
Rule: third = first × second. 11, 5 → 55.
Q18. Find the odd one out: EFH, HIJ, JKL, TUV
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Answer: C. EFH
In all groups except EFH, consecutive letters are 1 apart. In EFH the second gap is 2.
Q19. If the letters of the word 'KITCHEN' are arranged in alphabetical order, which letter will be 4th from the left?
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Answer: B. I
Alphabetical order: CEHIKNT. The 4th letter is I.
Q20. Mohan walks 5 m towards South, then turns left and walks 11 m, and finally turns right and walks 4 m. In which direction is Mohan now from the starting point?
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Answer: A. South-East
Net displacement: 9 m South and 11 m East. So Mohan is to the South-East of the start.
Q21. Find the odd pair: 2:8, 5:125, 7:343, 8:513
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Answer: C. 8:513
In each pair except 8:513, the second number is the cube of the first.
Q22. Find the odd pair: 5:11, 8:17, 11:25, 12:25
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Answer: D. 11:25
In each pair except 11:25, the second number is 2 × first + 1.
Q23. Deepak's mother is the only daughter of Sanjay's father. How is Sanjay related to Deepak?
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Answer: A. Uncle
Deepak's mother is Sanjay's sister, so Sanjay (male) is Deepak's maternal uncle.
Q24. Find the missing term: 17 : 288 :: 11 : ?
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Answer: B. 120
Rule: n² − 1. 11² − 1 = 120.
Q25. How many pairs of letters are there in the word 'LIBRARY' which have as many letters between them in the word as in the English alphabet (counting both forward and backward)?
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Answer: B. 0
The pairs are: none. Total = 0.