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
What approximate value should come in place of x: 45.05 + 54.95 - 20.02 = x.
Answer:
80
Round the numbers: 45 + 55 - 20. Addition and Subtraction: 100 - 20 = 80.
142
Find the approximate value: 150.01 / 14.99 * 2.02.
Answer:
20
Round off: 150 / 15 * 2. Division: 10 * 2 = 20.
143
Approximate: 8.05 * 7.95 + 35.98.
Answer:
100
Round to nearest integers: 8 * 8 + 36. Multiplication: 64 + 36 = 100.
144
What approximate value should come in place of the question mark: 119.95 / 3.99 - 15.01 = ?
Answer:
15
Round the numbers: 120 / 4 - 15. Division first: 30 - 15 = 15.
145
Find the approximate value: 29.98 * 2.01 + 10.05.
Answer:
70
Round to nearest integers: 30 * 2 + 10. According to BODMAS: 60 + 10 = 70.
146
Approximate the value of: 99.99 + 50.01 - 24.95.
Answer:
125
Round the numbers: 100 + 50 - 25. Then calculate: 150 - 25 = 125.
147
What approximate value should come in place of x: 49.95 / 5.01 = x.
Answer:
10
Round off the decimals: 50 / 5 = 10.
148
Find the approximate value of: 10.05 * 4.98.
Answer:
50
Round 10.05 to 10 and 4.98 to 5. Multiplication: 10 * 5 = 50.
149
What approximate value should come in place of the question mark: 39.99 - 19.95 = ?
Answer:
20
Round 39.99 to 40 and 19.95 to 20. Subtraction: 40 - 20 = 20.
150
Find the approximate value of: 14.98 + 25.02.
Answer:
40
Approximate the values to the nearest integers: 15 + 25 = 40.