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
71
The present age of A is 21 years and he is 12 years older than B. What will be the sum of their ages after 6 years?
Answer:
42
Step-by-step solution: 1. B's present age = 21 - 12 = 9. 2. A's age after 6 years = 21 + 6. 3. B's age after 6 years = 9 + 6. 4. Sum = (21 + 6) + (9 + 6) = 42.
72
The present age of A is 23 years and he is 7 years older than B. What will be the sum of their ages after 8 years?
Answer:
55
Step-by-step solution: 1. B's present age = 23 - 7 = 16. 2. A's age after 8 years = 23 + 8. 3. B's age after 8 years = 16 + 8. 4. Sum = (23 + 8) + (16 + 8) = 55.
73
The present age of A is 33 years and he is 7 years older than B. What will be the sum of their ages after 8 years?
Answer:
75
Step-by-step solution: 1. B's present age = 33 - 7 = 26. 2. A's age after 8 years = 33 + 8. 3. B's age after 8 years = 26 + 8. 4. Sum = (33 + 8) + (26 + 8) = 75.
74
The present age of A is 23 years and he is 9 years older than B. What will be the sum of their ages after 8 years?
Answer:
53
Step-by-step solution: 1. B's present age = 23 - 9 = 14. 2. A's age after 8 years = 23 + 8. 3. B's age after 8 years = 14 + 8. 4. Sum = (23 + 8) + (14 + 8) = 53.
75
The present age of A is 22 years and he is 13 years older than B. What will be the sum of their ages after 7 years?
Answer:
45
Step-by-step solution: 1. B's present age = 22 - 13 = 9. 2. A's age after 7 years = 22 + 7. 3. B's age after 7 years = 9 + 7. 4. Sum = (22 + 7) + (9 + 7) = 45.
76
The present age of A is 24 years and he is 9 years older than B. What will be the sum of their ages after 9 years?
Answer:
57
Step-by-step solution: 1. B's present age = 24 - 9 = 15. 2. A's age after 9 years = 24 + 9. 3. B's age after 9 years = 15 + 9. 4. Sum = (24 + 9) + (15 + 9) = 57.
77
The present age of A is 23 years and he is 10 years older than B. What will be the sum of their ages after 8 years?
Answer:
52
Step-by-step solution: 1. B's present age = 23 - 10 = 13. 2. A's age after 8 years = 23 + 8. 3. B's age after 8 years = 13 + 8. 4. Sum = (23 + 8) + (13 + 8) = 52.
78
The present age of A is 23 years and he is 8 years older than B. What will be the sum of their ages after 8 years?
Answer:
54
Step-by-step solution: 1. B's present age = 23 - 8 = 15. 2. A's age after 8 years = 23 + 8. 3. B's age after 8 years = 15 + 8. 4. Sum = (23 + 8) + (15 + 8) = 54.
79
The present age of A is 32 years and he is 11 years older than B. What will be the sum of their ages after 7 years?
Answer:
67
Step-by-step solution: 1. B's present age = 32 - 11 = 21. 2. A's age after 7 years = 32 + 7. 3. B's age after 7 years = 21 + 7. 4. Sum = (32 + 7) + (21 + 7) = 67.
80
The present age of A is 31 years and he is 6 years older than B. What will be the sum of their ages after 6 years?
Answer:
68
Step-by-step solution: 1. B's present age = 31 - 6 = 25. 2. A's age after 6 years = 31 + 6. 3. B's age after 6 years = 25 + 6. 4. Sum = (31 + 6) + (25 + 6) = 68.