Mathematical Operations - Question Bank
1. If 9 O 3 = 6, 12 O 4 = 8, 15 O 5 = 10, then 18 O 6 = ?
2. If 5 N 2 = 27, 6 N 3 = 45, 7 N 4 = 65, then 8 N 5 = ?
3. If 16 M 2 = 18, 20 M 3 = 23, 24 M 4 = 28, then 28 M 5 = ?
4. If 7 L 2 = 14, 8 L 3 = 24, 9 L 4 = 36, then 10 L 5 = ?
5. If 10 K 2 = 5, 15 K 3 = 5, 20 K 4 = 5, then 25 K 5 = ?
6. If 5 J 3 = 15, 6 J 4 = 24, 7 J 5 = 35, then 8 J 6 = ?
7. If 12 I 4 = 3, 20 I 5 = 4, 28 I 7 = 4, then 36 I 9 = ?
8. If 8 H 2 = 6, 10 H 3 = 7, 12 H 4 = 8, then 14 H 5 = ?
9. If 10 G 5 = 2, 20 G 4 = 5, 30 G 3 = 10, then 40 G 2 = ?
10. If 6 F 3 = 3, 9 F 4 = 5, 12 F 5 = 7, then 15 F 6 = ?
11. If 3 E 4 = 7, 5 E 6 = 11, 7 E 8 = 15, then 9 E 10 = ?
12. If 10 D 2 = 20, 12 D 3 = 36, 14 D 4 = 56, then 16 D 5 = ?
13. If 2 C 3 = 12, 4 C 5 = 40, 6 C 7 = 84, then 8 C 9 = ?
14. If 3 B 4 = 19, 5 B 6 = 41, 7 B 8 = 67, then 9 B 10 = ?
15. If 4 A 5 = 23, 6 A 7 = 41, 8 A 9 = 55, then 10 A 11 = ?
16. If 5 + 6 = 11, 7 + 8 = 15, 9 + 10 = 19, then 11 + 12 = ?
17. If 10 + 2 = 12, 12 + 3 = 15, 14 + 4 = 18, then 16 + 5 = ?
18. If 7 % 3 = 15, 9 % 4 = 23, 11 % 5 = 31, then 13 % 6 = ?
19. If 18 ÷ 3 = 15, 24 ÷ 4 = 20, 30 ÷ 5 = 25, then 36 ÷ 6 = ?
20. If 6 * 7 = 48, 5 * 6 = 35, 4 * 5 = 24, then 3 * 4 = ?
21. If 20 - 10 = 300, 15 - 5 = 100, 12 - 4 = 48, then 10 - 2 = ?
22. If 15 + 7 = 50, 12 + 9 = 63, 10 + 8 = 54, then 11 + 6 = ?
23. If 4 x 5 = 100, 3 x 7 = 147, 2 x 8 = 128, then 1 x 9 = ?
24. If 3 + 5 = 24, 6 + 2 = 48, 7 + 3 = 60, then 8 + 4 = ?
25. If 'X' means '÷', '÷' means '+', '+' means '-', and '-' means 'x', then evaluate 10 X 2 + 3 - 4 ÷ 5.
26. If the signs '+' and '-' are interchanged, and the numbers 4 and 6 are interchanged, what will be the value of the expression: 6 + 10 - 4?
27. If 16 - 4 = 64, 12 - 3 = 36, 10 - 2 = 20, then 8 - 1 = ?
28. If 9 ^ 2 = 80, 8 ^ 3 = 55, 7 ^ 4 = 45, then 6 ^ 5 = ?
29. If 5 x 2 = 30, 6 x 3 = 48, 7 x 4 = 68, then 8 x 5 = ?
30. If 12 + 3 = 36, 13 + 4 = 52, 14 + 5 = 70, then 15 + 6 = ?
31. If 'a' means 'x', 'b' means '+', 'c' means '-', and 'd' means '÷', then 8a4b2c6d3 = ?
32. If 24 ÷ 6 = 10, 30 ÷ 5 = 11, 36 ÷ 4 = 12, then 42 ÷ 3 = ?
33. If 5 @ 3 = 19, 7 @ 4 = 35, 6 @ 5 = 31, then 8 @ 6 = ?
34. If 13 + 13 = 156, 14 + 14 = 182, 15 + 15 = 225, then 16 + 16 = ?
35. If 10 = 100, 9 = 81, 8 = 64, then 7 = ?
36. If 3 # 2 = 10, 4 # 3 = 20, 5 # 4 = 30, then 6 # 5 = ?
37. If 7 + 2 = 36, 5 + 3 = 32, 4 + 2 = 24, then 6 + 4 = ?
38. If '+' denotes 'x', '-' denotes '+', 'x' denotes '÷', and '÷' denotes '-', then what is the value of 10 + 6 - 4 x 2 ÷ 8?
39. Given the equation 18 + 6 ÷ 3 - 2 = 4. If the signs '÷' and '-' are interchanged, which will be the correct value?
40. If 12 $ 3 = 4, 15 $ 5 = 3, 20 $ 4 = 5, then 24 $ 6 = ?
41. If 10 % 2 = 8, 12 % 3 = 9, 14 % 4 = 10, then 16 % 5 = ?
42. If 4 * 3 = 14, 5 * 4 = 23, 6 * 5 = 32, then 7 * 6 = ?
43. If 3 + 4 = 10, 5 + 6 = 22, 7 + 8 = 36, then 9 + 10 = ?
44. In a certain code, 12 is written as 3, 20 as 5, and 30 as 6. How is 42 written in this code?
45. If '+' is replaced by 'x', '-' is replaced by '+', 'x' is replaced by '-', and '÷' is replaced by '+', then what is the value of 12 + 6 - 3 x 2 ÷ 4?
46. If 'A' denotes 'added to', 'B' denotes 'brought', 'C' denotes 'carried', and 'D' denotes 'divided by', then which of the following is correct: 20 C 5 A 10 D 2 B 8?
47. If 16 ÷ 2 = 8, 24 ÷ 3 = 8, 32 ÷ 4 = 8, then 40 ÷ 5 = ?
48. In the following equation, we have 15 ? 3 ? 5 = 10. Which mathematical operators should replace the question marks?
49. If 6 # 3 = 18, 8 # 4 = 32, and 10 # 5 = 50, then what is the value of 12 # 6?
50. Given the equation 5 + 3 x 2 = 16. If the operator 'x' is replaced by '+', what will be the new value?