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
161
Identify the odd one out in the series: 3, 7, 11, 15, 19, 24, 27
Answer:
24
Step 1: Examine the numbers: 3, 7, 11, 15, 19, 24, 27. Step 2: Notice the arithmetic progression where the common difference is +4. Step 3: The number after 19 should be 19 + 4 = 23. Instead, 24 is given, making it the odd one out.
162
Find the odd man out: 11, 22, 33, 44, 55, 66, 78
Answer:
78
Step 1: Analyze the sequence: 11, 22, 33, 44, 55, 66, 78. Step 2: Recognize that these are multiples of 11, meaning a constant difference of +11. Step 3: The next term after 66 should be 77. The number 78 is the odd man out.
163
Which number does not belong to the group: 50, 43, 36, 29, 22, 16, 8
Answer:
16
Step 1: Review the decreasing series: 50, 43, 36, 29, 22, 16, 8. Step 2: Calculate the difference. 50-43=7, 43-36=7. The pattern is -7. Step 3: The number after 22 should be 22 - 7 = 15. The number 16 breaks the pattern, making it the odd man out.
164
Find the odd man out in the series: 2, 6, 10, 14, 18, 22, 27
Answer:
27
Step 1: Look at the numbers: 2, 6, 10, 14, 18, 22, 27. Step 2: Determine the common difference. Each term increases by 4 (+4). Step 3: The term following 22 should be 22 + 4 = 26. The number 27 is the odd man out.
165
Identify the odd one out: 7, 14, 21, 28, 35, 41, 49
Answer:
41
Step 1: Analyze the sequence: 7, 14, 21, 28, 35, 41, 49. Step 2: Identify the pattern: These are consecutive multiples of 7 (or an arithmetic progression with a difference of +7). Step 3: The multiple after 35 should be 42. Since 41 is present, it is the odd man out.
166
Find the odd man out: 1, 4, 7, 10, 13, 16, 18, 22
Answer:
18
Step 1: Observe the given series: 1, 4, 7, 10, 13, 16, 18, 22. Step 2: Calculate the difference between consecutive terms. The pattern is +3. Step 3: The term after 16 should be 16 + 3 = 19. The number 18 breaks this arithmetic progression, making it the odd man out.
167
Which number is the odd man out: 100, 95, 90, 85, 80, 74, 70
Answer:
74
Step 1: Analyze the decreasing series: 100, 95, 90, 85, 80, 74, 70. Step 2: The pattern is a constant subtraction of 5 (-5). Step 3: Following 80, the next number should be 80 - 5 = 75. Instead, 74 is given, making it the odd man out.
168
Find the odd number in the series: 5, 12, 19, 26, 33, 41, 47
Answer:
41
Step 1: Examine the numbers: 5, 12, 19, 26, 33, 41, 47. Step 2: Check the differences between terms. 12-5=7, 19-12=7, 26-19=7, 33-26=7. The common difference is +7. Step 3: The next term should be 33 + 7 = 40. The number 41 breaks the pattern, making it the odd man out.
169
Identify the odd one out: 10, 15, 20, 25, 30, 36, 40
Answer:
36
Step 1: Look at the sequence: 10, 15, 20, 25, 30, 36, 40. Step 2: Notice that the series increases by a constant difference of +5. Step 3: Following the pattern, 30 + 5 should equal 35. Since 36 is present instead, it is the odd one out.
170
Find the odd man out: 2, 5, 8, 11, 14, 16, 20
Answer:
16
Step 1: Analyze the series: 2, 5, 8, 11, 14, 16, 20. Step 2: Determine the difference between consecutive terms. The difference is +3 (2+3=5, 5+3=8, 8+3=11, 11+3=14). Step 3: The next term should be 14 + 3 = 17, but 16 is given. Therefore, 16 is the odd man out.