Home›MPPSC Prelims›Paper 2: General Aptitude Test (CSAT)›General Aptitude›Logical Reasoning and Analytical Ability›Deductive & Inductive Reasoning, Syllogisms, Series, Coding-Decoding›Fill in the blank. | 8 | 10 | 15 | 13 | | 6 | 5 | 7 | 4 | | 4 | 6 |

Fill in the blank.

| 8 | 10 | 15 | 13 |
| 6 | 5 | 7 | 4 |
| 4 | 6 | 8 | 8 |
| 6 | 11 | 16 | ? |

20212Mprelimsyear-2021p2
A.(A) 17Correct
B.(B) 19
C.(C) 21
D.(D) 23
Explanation & Solution

The correct answer is (A) 17.

  • Logical Principle: Observe the column-wise arithmetic relationship. For each column, if we denote the numbers from top to bottom as R1, R2, R3, and R4, the pattern is: R1 + R2 - R3 = R4.
  • Step-by-step Calculation: Column 1: 8 + 6 - 4 = 10 (Wait, applying this rule to Column 1: 8 + 6 - 4 = 10, but the 4th row is 6. Let us re-examine: R1 + R2 - R3 = R4 logic does not fit, rather the pattern is (R1 + R2) - R3 = R4 is invalid. Let us check R1 + R2 + R3 = R4: 8+6+4=18 (no). Let us try R1 - R2 + R3 = R4: 8 - 6 + 4 = 6. Column 2: 10 - 5 + 6 = 11. Column 3: 15 - 7 + 8 = 16. Column 4: 13 - 4 + 8 = 17.
  • Verification: The pattern (Row 1 - Row 2 + Row 3 = Row 4) holds for all columns. Applying this to column 4: 13 - 4 + 8 = 17. Therefore, 17 is correct, while others are incorrect based on the verified logic.

हिंदी में प्रश्न एवं आदर्श उत्तर

रिक्त स्थान भरें।

| 8 | 10 | 15 | 13 |
| 6 | 5 | 7 | 4 |
| 4 | 6 | 8 | 8 |
| 6 | 11 | 16 | ? |

A.(A) 17सही
B.(B) 19
C.(C) 21
D.(D) 23

सही उत्तर (A) 17 है।

  • तार्किक सिद्धांत: स्तंभों (columns) के बीच संबंध का अवलोकन करें। प्रत्येक स्तंभ के लिए, यदि हम ऊपर से नीचे की संख्याओं को R1, R2, R3, और R4 मानें, तो पैटर्न (R1 - R2 + R3 = R4) है।
  • चरणबद्ध गणना: स्तंभ 1: 8 - 6 + 4 = 6। स्तंभ 2: 10 - 5 + 6 = 11। स्तंभ 3: 15 - 7 + 8 = 16। स्तंभ 4: 13 - 4 + 8 = 17।
  • सत्यापन: उपरोक्त पैटर्न सभी स्तंभों पर सटीक बैठता है। अतः चौथे स्तंभ के लिए गणना 13 - 4 + 8 = 17 प्राप्त होती है। अन्य विकल्प तार्किक रूप से असंगत हैं।
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