SSC CGL Reasoning – Missing Numbers, Matrices & Venn-Based Counting – Level 1 · Rules and Reading

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SSC CGL Reasoning – Missing Numbers, Matrices & Venn-Based Counting – Level 1 · Rules and Reading – 12 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.  
MatrixFind the missing number in the matrix.

Correct Answer: C [34]

Explanation:

Row rule a² + b²: 4 + 9 = 13, 16 + 1 = 17 → 25 + 9 = 34.

2.  
FigureThe number inside each triangle is made from its three corners. Find the missing number.

Correct Answer: D [24]

Explanation:

Centre = product of corners: 2 × 3 × 4 = 24, 1 × 5 × 3 = 15 → 2 × 2 × 6 = 24.

3.  
Find the missing number: (6, 8) → 48, (9, 3) → 27, (7, 5) → ?

Correct Answer: B [35]

Explanation:

Third number = product: 6 × 8 = 48, 9 × 3 = 27 → 7 × 5 = 35.

4.  
FigureIn the circle, find the missing number.

Correct Answer: A [49]

Explanation:

Each sector is the square of the one opposite it: 2→4, 3→9, 5→25 → 7→49.

5.  

Directions (Q 5–7): Study the diagram and answer the questions. Each number is the count of people in that region.

How many graduates are employed but are not women?

Correct Answer: C [7]

Explanation:

Only the Graduates–Employed overlap outside Women: 7.

6.  
(Use the directions above – Q 5–7)
How many employed people are not graduates?

Correct Answer: A [15]

Explanation:

Employed outside Graduates = only employed 9 + employed women (not graduates) 6 = 15.

7.  
(Use the directions above – Q 5–7)
How many people belong to exactly one of the three groups?

Correct Answer: D [35]

Explanation:

Only regions: 12 + 9 + 14 = 35.

8.  
SurveyIn a colony, 60 families read a Tamil daily, 45 read an English daily and 20 read both. How many families read at least one of the two?

Correct Answer: B [85]

Explanation:

60 + 45 − 20 = 85; 105 counts the 20 readers of both papers twice.

9.  
FigureIn the pyramid each block is the sum of the two blocks below it. Find the top block.

Correct Answer: D [17]

Explanation:

6 + 2 = 8, 2 + 7 = 9, 8 + 9 = 17 (or 6 + 2 × 2 + 7).

10.  
MatrixFind the missing letter.

Correct Answer: C [Q]

Explanation:

Read row after row: A, C, E, G, I, K, M, O – each letter skips one (+2) → Q.

11.  
Statement-basedConsider two groups A and B of people.
Statement I: The number in at least one group can never be less than the size of the larger group.
Statement II: The number in both groups can be larger than the number in A.

Correct Answer: A [Only I is true]

Explanation:

The union contains the larger group, so I is true.

12.  
SurveyA club has 50 members. 32 play chess, 25 play carrom and every member plays at least one of them. How many play only chess?

Correct Answer: B [25]

Explanation:

Both = 32 + 25 − 50 = 7 → only chess = 32 − 7 = 25.

➤ 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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