Q1. Find the missing term: 15 : 240 :: 7 : ?
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Answer: C. 56
Rule: n(n + 1). 7 × 8 = 56.
SSC CGL General Intelligence & Reasoning Advanced Practice Set 9
25 advanced questions, suggested time 30 minutes. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Analogy, Alphabet Test, Direction Sense, Number Series, Number Ranking, Blood Relations, Calendar, Missing Number, Clock, Mathematical Operations, Alphabet Series, Coding-Decoding
Score: 0 / 0
Q2. How many pairs of letters are there in the word 'JOURNEY' 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: C. 3
The pairs are: JN, JE, UY. Total = 3.
Q3. Pooja walks 12 m towards West, then turns left and walks 8 m, and finally turns left and walks 6 m. In which direction is Pooja now from the starting point?
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Answer: B. South-West
Net displacement: 8 m South and 6 m West. So Pooja is to the South-West of the start.
Q4. Find the next number in the series: 2, 3, 5, 7, 11, ?
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Answer: A. 13
These are consecutive prime numbers. Next = 13.
Q5. How many numbers from 1 to 400 are divisible by 9 or 8?
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Answer: C. 89
⌊400/9⌋ + ⌊400/8⌋ − ⌊400/72⌋ = 44 + 50 − 5 = 89.
Q6. Pointing to a woman, Manoj said, 'She is the daughter of my grandfather's only son.' How is the woman related to Manoj?
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Answer: A. Sister
Grandfather's only son = Manoj's father; his daughter is Manoj's sister.
Q7. Find the wrong number in the series: 9, 16, 25, 36, 51, 64, 81
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Answer: D. 51
Rule: squares of 3 to 9. The term should be 49, not 51.
Q8. Find the wrong number in the series: 3, 6, 12, 24, 48, 95, 192
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Answer: A. 95
Rule: multiply by 2. The term should be 96, not 95.
Q9. What day of the week was 5 June 2009?
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Answer: C. Friday
1 January 2009 was a Thursday. 5 June is 155 days later; 155 mod 7 = 1 odd days, so it falls on a Friday.
Q10. Find the missing number, following the same rule in each group: (12, 7, 103); (7, 4, 39); (9, 8, ?)
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Answer: D. 89
Rule: third = first × second + first + second. 9, 8 → 89.
Q11. Find the missing term: 38 : 19 :: 24 : ?
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Answer: C. 12
The second term is half the first: 24/2 = 12.
Q12. What is the angle between the hour hand and the minute hand of a clock at 5:58?
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Answer: B. 169°
|30 × 5 − 5.5 × 58| = |150 − 319| → smaller angle = 169°.
Q13. How many numbers from 1 to 950 are divisible by 4 or 3?
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Answer: D. 474
⌊950/4⌋ + ⌊950/3⌋ − ⌊950/12⌋ = 237 + 316 − 79 = 474.
Q14. If the letters of the word 'SCIENCE' are arranged in alphabetical order, which letter will be 5th from the left?
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Answer: D. I
Alphabetical order: CCEEINS. The 5th letter is I.
Q15. If '+' means '×', '−' means '+', '×' means '÷', '÷' means '−', then what is the value of 15 ÷ 14 − 13 + 15?
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Answer: B. 196
After substitution: 15 − 14 + 13 × 15 = 196.
Q16. How many numbers from 1 to 350 are divisible by both 2 and 7?
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Answer: B. 25
LCM(2, 7) = 14; ⌊350/14⌋ = 25.
Q17. Find the wrong number in the series: 17, 23, 29, 35, 41, 45, 53
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Answer: C. 45
Rule: add 6. The term should be 47, not 45.
Q18. Find the wrong number in the series: 16, 31, 40, 52, 64, 76, 88
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Answer: C. 31
Rule: add 12. The term should be 28, not 31.
Q19. Find the missing number in the series: 17, 33, 20, 28, ?, 23
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Answer: C. 23
Two alternating series: 17, 20, 23 (+3) and 33, 28, 23 (−5).
Q20. Find the missing number, following the same rule in each group: (12, 12, 168); (4, 9, 49); (10, 12, ?)
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Answer: A. 142
Rule: third = first × second + first + second. 10, 12 → 142.
Q21. Find the missing term: 12 : 156 :: 5 : ?
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Answer: A. 30
Rule: n(n + 1). 5 × 6 = 30.
Q22. Find the next term: AB, EF, IJ, ?
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Answer: B. MN
Each pair's letters are 1 apart, and each new pair starts 4 letters after the previous one: MN.
Q23. How many numbers from 1 to 850 are divisible by both 7 and 5?
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Answer: A. 24
LCM(7, 5) = 35; ⌊850/35⌋ = 24.
Q24. If the letters of the word 'DAUGHTER' are arranged in alphabetical order, which letter will be 3rd from the left?
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Answer: A. E
Alphabetical order: ADEGHRTU. The 3rd letter is E.
Q25. If SILVER is coded as 85, then how is EAGLE coded? (Code = sum of letter positions)
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Answer: C. 30
EAGLE: 5 + 1 + 7 + 12 + 5 = 30.