Mathematical Operations Reasoning Questions are a common and scoring topic in the Reasoning section of SSC, Railway and other competitive exams. These questions test a candidate’s ability to understand substituted mathematical symbols, interchange operators and solve equations using logical rules and BODMAS. This article covers important concepts, solving methods, worked examples, a practice PDF and a live quiz for effective preparation.
Download Mathematical Operation Questions PDF for SSC and Railway Exams
Candidates can download the Mathematical Operations Reasoning Questions PDF from the link provided below. It contains 200 exam-relevant questions designed to improve calculation speed, logical application and accuracy.
Attempt Mathematical Operation Questions Live Quiz
Solve the Mathematical Operation Questions given below and evaluate your performance through the live quiz. The practice set includes operator interchange, symbol substitution, missing mathematical signs, equation balancing, coded operations and BODMAS-based questions frequently asked in SSC and Railways examinations.
1. In a certain code language, ‘+’ represents ‘÷’, ‘-‘ represents ‘×’, ‘×’ represents ‘-‘, and ‘÷’ represents ‘+’. What is the value of:
27 ÷ 17 – 17 × 26 – 15 = ?
2. Which two signs should be interchanged to make the following equation correct?
19 + 3 – 12 × 24 ÷ 4 = 88
3. Which two signs should be interchanged to make the following equation correct?
23 ÷ 23 – 12 + 6 × 5 = -17
4. If ‘+’ is interchanged with ‘-‘ and ‘×’ is interchanged with ‘÷’, which of the following equations is correct?
5. Observe the following pattern: 8 # 4 = 28, 1 # 4 = 7, 3 # 6 = 21. Using the same rule, find:
6 # 6 = ?
6. If ‘+’ is interchanged with ‘÷’ and ‘-‘ is interchanged with ‘×’, which of the following equations is correct?
7. Which two numbers should be interchanged to make the following equation correct?
8 + 14 – 22 + 20 – 6 = 30
8. If ‘A’ means ‘-‘, ‘B’ means ‘×’, ‘C’ means ‘+’, and ‘D’ means ‘÷’, find the value of:
25 B 24 A 22 B 21 C 25 = ?
9. Which two signs should be interchanged to make the following equation correct?
2 ÷ 16 – 20 + 22 × 11 = 8
10. Which two numbers should be interchanged to make the following equation correct?
15 + 18 ÷ 6 × 4 – 17 = 25
11. In a certain code language, ‘+’ represents ‘-‘, ‘-‘ represents ‘×’, ‘×’ represents ‘÷’, and ‘÷’ represents ‘+’. What is the value of:
28 ÷ 3 – 24 ÷ 20 + 29 = ?
12. In a certain code language, ‘+’ represents ‘-‘, ‘-‘ represents ‘÷’, ‘×’ represents ‘+’, and ‘÷’ represents ‘×’. What is the value of:
17 × 24 + 4 + 2 × 9 = ?
13. Which two signs should be interchanged to make the following equation correct?
6 × 15 + 16 ÷ 8 – 20 = 31
14. Which two signs should be interchanged to make the following equation correct?
20 – 16 × 24 + 8 ÷ 23 = -5
15. In a certain code language, ‘+’ represents ‘-‘, ‘-‘ represents ‘×’, ‘×’ represents ‘÷’, and ‘÷’ represents ‘+’. What is the value of:
6 + 28 ÷ 5 + 21 + 25 = ?
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16. Which two numbers should be interchanged to make the following equation correct?
15 – 25 ÷ 13 + 14 – 5 = 11
17. Which two signs should be interchanged to make the following equation correct?
22 ÷ 15 – 18 × 6 + 2 = 329
18. If ‘+’ is interchanged with ‘÷’ and ‘-‘ is interchanged with ‘×’, which of the following equations is correct?
19. If ‘A’ means ‘×’, ‘B’ means ‘÷’, ‘C’ means ‘-‘, and ‘D’ means ‘+’, find the value of:
10 A 6 A 23 D 9 A 12 = ?
20. If ‘+’ is interchanged with ‘×’ and ‘-‘ is interchanged with ‘÷’, which of the following equations is correct?
21. In a certain code language, ‘+’ represents ‘÷’, ‘-‘ represents ‘+’, ‘×’ represents ‘-‘, and ‘÷’ represents ‘×’. What is the value of:
28 × 15 + 5 × 4 × 30 = ?
22. In a certain code language, ‘+’ represents ‘÷’, ‘-‘ represents ‘+’, ‘×’ represents ‘-‘, and ‘÷’ represents ‘×’. What is the value of:
24 × 25 × 30 × 27 + 27 = ?
23. Which two signs should be interchanged to make the following equation correct?
15 × 9 – 3 + 9 ÷ 12 = 42
24. Which two signs should be interchanged to make the following equation correct?
6 × 24 – 12 ÷ 7 + 7 = 12
25. Which two signs should be interchanged to make the following equation correct?
5 ÷ 19 + 3 – 3 × 24 = 10
26. Which two signs should be interchanged to make the following equation correct?
9 + 13 – 10 ÷ 10 × 25 = 141
27. Observe the following pattern: 6 # 3 = 39, 2 # 1 = 5, 1 # 4 = 5. Using the same rule, find:
8 # 4 = ?
28. Which two signs should be interchanged to make the following equation correct?
8 – 4 ÷ 6 + 5 × 19 = 91
29. If ‘A’ means ‘-‘, ‘B’ means ‘×’, ‘C’ means ‘+’, and ‘D’ means ‘÷’, find the value of:
26 A 23 C 17 C 12 A 15 = ?
30. If ‘A’ means ‘÷’, ‘B’ means ‘×’, ‘C’ means ‘+’, and ‘D’ means ‘-‘, find the value of:
22 C 19 C 30 D 10 D 15 = ?
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I’m Mahima Khurana, a writer with a strong passion for creating meaningful, learner-focused content especially in the field of competitive exam preparation. From authoring books and developing thousands of practice questions to crafting articles and study material, I specialize in transforming complex exam-related topics into clear, engaging, and accessible content. I have first hand experience of 5+ months in SSC Exams. Writing, for me, is not just a skill but a way to support and guide aspirants through their preparation journey one well-written explanation at a time.
