Mathematics/General Ability MCQs
Topic Notes: Mathematics/General Ability
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
141
Identify the odd one out in the series: 20, 24, 30, 38, 48, 60, 73
Answer:
73
Step 1: Examine the numbers: 20, 24, 30, 38, 48, 60, 73. Step 2: Calculate the differences: +4, +6, +8, +10, +12. Step 3: The differences are consecutive even numbers. The next difference is +14, making 60 + 14 = 74. Since 73 is given, it is the odd one out.
142
Find the odd man out: 8, 11, 16, 23, 32, 43, 55
Answer:
55
Step 1: Analyze the sequence: 8, 11, 16, 23, 32, 43, 55. Step 2: Check the differences between terms: +3, +5, +7, +9, +11. Step 3: Following the odd numbers pattern, the next difference is +13. 43 + 13 = 56. Thus, 55 is the odd man out.
143
Which number does not belong to the group: 1, 2, 5, 10, 17, 26, 37, 51
Answer:
51
Step 1: Review the series: 1, 2, 5, 10, 17, 26, 37, 51. Step 2: Find the pattern in differences: +1, +3, +5, +7, +9, +11. Step 3: The next difference should be +13. Therefore, 37 + 13 = 50. The number 51 breaks the pattern.
144
Find the odd man out in the series: 0, 3, 8, 15, 24, 35, 49
Answer:
49
Step 1: Look at the numbers: 0, 3, 8, 15, 24, 35, 49. Step 2: Check the successive differences: +3, +5, +7, +9, +11. Step 3: The next difference must be +13. So, 35 + 13 = 48. The given number 49 is the odd man out.
145
Identify the odd one out: 2, 3, 6, 11, 18, 27, 39
Answer:
39
Step 1: Analyze the sequence: 2, 3, 6, 11, 18, 27, 39. Step 2: Determine the difference between terms: +1, +3, +5, +7, +9. Step 3: The next difference should be +11. Therefore, 27 + 11 = 38. The number 39 is the odd man out.
146
Find the odd man out: 5, 6, 9, 14, 21, 30, 42
Answer:
42
Step 1: Observe the given series: 5, 6, 9, 14, 21, 30, 42. Step 2: Look at the successive differences: +1, +3, +5, +7, +9. Step 3: The difference pattern consists of consecutive odd numbers. The next difference should be +11. So, 30 + 11 = 41. 42 is the odd man out.
147
Which number is the odd man out: 10, 14, 20, 28, 38, 50, 64, 82
Answer:
82
Step 1: Analyze the series: 10, 14, 20, 28, 38, 50, 64, 82. Step 2: The differences between consecutive terms are +4, +6, +8, +10, +12, +14. Step 3: The next expected difference is +16. Therefore, 64 + 16 = 80. The number 82 breaks the pattern.
148
Find the odd number in the series: 4, 7, 12, 19, 28, 39, 52, 68
Answer:
68
Step 1: Examine the numbers: 4, 7, 12, 19, 28, 39, 52, 68. Step 2: Find the differences: +3, +5, +7, +9, +11, +13. Step 3: The next difference should be +15. So, 52 + 15 = 67. The number 68 is the odd man out.
149
Identify the odd one out: 1, 3, 6, 10, 15, 21, 28, 36, 46
Answer:
46
Step 1: Look at the sequence: 1, 3, 6, 10, 15, 21, 28, 36, 46. Step 2: Calculate the differences: +2, +3, +4, +5, +6, +7, +8. Step 3: The next difference should be +9. Therefore, 36 + 9 = 45. Since 46 is given, it is the odd man out.
150
Find the odd man out: 2, 5, 10, 17, 26, 37, 50, 65, 80
Answer:
80
Step 1: Analyze the series: 2, 5, 10, 17, 26, 37, 50, 65, 80. Step 2: Look at the differences between consecutive terms: +3, +5, +7, +9, +11, +13, +15. Step 3: The next difference should be +17. So, 65 + 17 = 82. The given number 80 is the odd man out.