SSC CGL Reasoning – Missing Numbers, Matrices & Venn-Based Counting – Tier II Level · Marathon

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SSC CGL Reasoning – Missing Numbers, Matrices & Venn-Based Counting – Tier II Level · Marathon – 9 questions, subject: General Intelligence & Reasoning. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
SurveyIn a survey, 50% read paper A, 45% read B and 40% read C; 20% read A and B, 15% read B and C, 18% read A and C, and 8% read all three. What percentage read exactly one paper?

Correct Answer: D [53%]

Explanation:

Only A 20, only B 18, only C 15 → 53% (135 − 106 + 24).

2.  
Max/MinIn a town, 80% own a phone, 85% own a TV and 90% own a bicycle. At least what percentage own all three?

Correct Answer: C [55%]

Explanation:

80 + 85 + 90 − 2 × 100 = 55 (and a set-up with exactly 55% exists).

3.  
FigureFind the missing number.

Correct Answer: A [30]

Explanation:

Centre = product of corners ÷ 2: 24/2 = 12, 30/2 = 15 → 60/2 = 30.

4.  
FigureFind the missing number.

Correct Answer: B [49]

Explanation:

(top + bottom) × (left + right): 6 × 4 = 24, 8 × 6 = 48 → 7 × 7 = 49.

5.  
MatrixEvery row, column and diagonal of this square has the same total. Find the missing number.

Correct Answer: B [2]

Explanation:

Row 1 total = 15 → 15 − 4 − 9 = 2 (check: 6 + 7 + 2 = 15, 8 + 5 + 2 = 15).

6.  
SurveyIn a group, 22 study both French and German, 18 study both German and Spanish, 20 study both French and Spanish, and 7 study all three. How many study exactly two of these languages?

Correct Answer: A [39]

Explanation:

Pairs 60 − 3 × 7 = 39. Pairs 22 + 18 + 20 = 60; each all-three person sits in all three pair counts.

7.  
Reverse questionOf 100 people, 10 like none of the three fruits. 45 like mango, 40 like banana and 35 like guava; 15 like mango and banana, 12 like banana and guava, and 13 like mango and guava. How many like all three?

Correct Answer: C [10]

Explanation:

90 = 120 − 40 + x → x = 10.

8.  

Directions (Q 44–45): In the diagram all surgeons are doctors and no surgeon is a singer. Each number is the count of that region.

How many doctors are neither singers nor surgeons?

Correct Answer: D [18]

Explanation:

The part of Doctors outside both other circles: 18.

9.  
(Use the directions above – Q 44–45)
How many doctors are there in all?

Correct Answer: C [33]

Explanation:

18 + 6 (doctor-singers) + 9 (surgeons) = 33.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Intelligence & Reasoning book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-intelligence-reasoning

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