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
Calculate: 30% of 40 + 40% of 30.
Answer:
24
30% of 40 = (30/100)*40 = 12. 40% of 30 = (40/100)*30 = 12. Addition: 12 + 12 = 24.
162
Simplify: 12.5% of 800.
Answer:
100
12.5% is exactly 1/8 as a fraction. So, 1/8 * 800 = 100.
163
Find the value of: 5% of 400 * 2.
Answer:
40
Calculate percentage: 5% of 400 = (5/100) * 400 = 20. Multiplication: 20 * 2 = 40.
164
Evaluate: 75% of 120 + 10.
Answer:
100
75% is equivalent to 3/4. So, (3/4) * 120 = 90. Then addition: 90 + 10 = 100.
165
Calculate: 15% of 300 - 25.
Answer:
20
Calculate percentage: 15% of 300 = (15/100) * 300 = 45. Subtraction: 45 - 25 = 20.
166
Simplify: (40% of 250) / 10.
Answer:
10
Bracket first: 40% of 250 = (40/100) * 250 = 100. Then division: 100 / 10 = 10.
167
Find the value of: 10% of 200 + 20% of 100.
Answer:
40
10% of 200 = 20. 20% of 100 = 20. Addition: 20 + 20 = 40.
168
Evaluate: 50% of 80 - 30% of 50.
Answer:
25
50% of 80 = 40. 30% of 50 = (30/100) * 50 = 15. Subtraction: 40 - 15 = 25.
169
Calculate: 25% of 400 + 10.
Answer:
110
Find the percentage first: 25% of 400 is 1/4 of 400 = 100. Then add 10: 100 + 10 = 110.
170
Simplify: 20% of 150.
Answer:
30
Convert percentage to fraction or decimal: 0.20 * 150 = 30.