Q1. Find the wrong number in the series: 6, 13, 18, 27, 34, 41, 48
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Answer: B. 18
Rule: add 7. The term should be 20, not 18.
SSC CGL General Intelligence & Reasoning Beginner Practice Set 8
25 beginner questions. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Number Series, Calendar, Number Ranking, Ranking and Order, Classification, Coding-Decoding, Alphabet Test, Analogy, Clock, Direction Sense, Missing Number
Score: 0 / 0
Q2. Which of the following is a leap year?
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Answer: C. 2088
2088 is divisible by 4 and is not a century year, so it is a leap year. 2200, 2100 are century years not divisible by 400.
Q3. Find the next number in the series: 7, 14, 28, 56, 112, ?
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Answer: A. 224
Each term is multiplied by 2: 112 × 2 = 224.
Q4. How many numbers from 1 to 300 are divisible by 8 or 4?
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Answer: A. 75
⌊300/8⌋ + ⌊300/4⌋ − ⌊300/8⌋ = 37 + 75 − 37 = 75.
Q5. Find the wrong number in the series: 4, 8, 19, 32, 64, 128, 256
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Answer: C. 19
Rule: multiply by 2. The term should be 16, not 19.
Q6. In a row of 30 people, Manoj is 7th from the left and Shalini is 8th from the right. How many people are there between them?
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Answer: B. 15
Between = 30 − (7 + 8) = 15.
Q7. Find the odd pair: 3:27, 5:125, 6:216, 8:513
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Answer: A. 8:513
In each pair except 8:513, the second number is the cube of the first.
Q8. In a certain code, ORANGE is written as RUDQJH. How is PLANT written in that code?
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Answer: B. SODQW
Each letter moves 3 places forward. So PLANT → SODQW.
Q9. If the letters of the word 'DIAMOND' are arranged in alphabetical order, which letter will be 3rd from the left?
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Answer: A. D
Alphabetical order: ADDIMNO. The 3rd letter is D.
Q10. Find the missing term: EAG : GCI :: LIG : ?
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Answer: A. NKI
Each letter moves 2 places forward: LIG → NKI.
Q11. If the letters of the word 'JOURNEY' are arranged in alphabetical order, which letter will be 3rd from the left?
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Answer: B. N
Alphabetical order: EJNORUY. The 3rd letter is N.
Q12. How many numbers from 1 to 100 are divisible by both 9 and 3?
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Answer: D. 11
LCM(9, 3) = 9; ⌊100/9⌋ = 11.
Q13. Find the odd one out: 16, 17, 64, 81
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Answer: C. 17
All except 17 are perfect squares.
Q14. If the digits of the number 38916 are arranged in ascending order, what is the sum of the 1st and 2nd digits from the left?
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Answer: B. 4
Ascending: 13689. 1 + 3 = 4.
Q15. A clock shows 9:35. What time will its mirror image show?
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Answer: B. 2:25
11:60 − 9:35 = 2:25.
Q16. Suresh walks 5 km towards North, then turns left and walks 12 km. How far is Suresh from the starting point?
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Answer: D. 13 km
Distance = √(5² + 12²) = √169 = 13 km.
Q17. Find the missing term: 14 : 195 :: 5 : ?
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Answer: A. 24
Rule: n² − 1. 5² − 1 = 24.
Q18. If the digits of the number 35246 are arranged in ascending order, what is the sum of the 2nd and 5th digits from the left?
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Answer: D. 9
Ascending: 23456. 3 + 6 = 9.
Q19. In a row of students, Anjali is 20th from the left and 9th from the right. How many students are there in the row?
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Answer: D. 28
Total = 20 + 9 − 1 = 28.
Q20. Find the odd pair: 3:27, 4:63, 7:343, 8:512
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Answer: D. 4:63
In each pair except 4:63, the second number is the cube of the first.
Q21. In a row of 36 people, Rekha is 11th from the left and Manoj is 4th from the right. How many people are there between them?
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Answer: A. 21
Between = 36 − (11 + 4) = 21.
Q22. If today is Friday, what day of the week will it be after 177 days?
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Answer: D. Sunday
177 ÷ 7 leaves remainder 2. Friday + 2 days = Sunday.
Q23. A clock shows 3:10. What time will its mirror image show?
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Answer: A. 8:50
11:60 − 3:10 = 8:50.
Q24. Find the missing number, following the same rule in each group: (3, 4, 49); (2, 8, 100); (10, 9, ?)
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Answer: C. 361
Rule: third = (first + second)². 10, 9 → 361.
Q25. Which letter is 3rd to the right of the 20th letter from the left in the English alphabet?
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Answer: A. W
The 20th letter is T. 3 places to the right gives W.